Summer Birthday Parties
Special summer birthdays with a splash!
Let’s make this summer unforgettable with a celebration at Funplex! Our party packages offer an array of exciting activities, from arcade games and bowling to go-karts, indoor thrill rides, and a refreshing waterpark. Dive into the details of our summer packages, explore private suite upgrades, and check out our enticing party add-ons.
Summer Birthday Parties available to book now for parties from May 23rd to September 7th, 2026.
What's Included
Here's how we party!
The Secrets to Effortless Birthdays!
Dedicated Party Host: A professional host keeps everything running smoothly, so you can relax and enjoy a stress-free celebration.
Reserved Party Space: Enjoy a reserved table or private party room, depending on the package you choose.
Easy Party Setup: We provide all paper party supplies—just show up and celebrate! Themed décor upgrades are also available.
FREE Birthday Child: The guest of honor is free and doesn’t count toward the 10 children included in your party package.
Food Included: Every party includes food for the kids, with additional catering options available to order in advance. Click Here to View the Catering Menu
Proven Track Record: Hundreds of happy families trust us with their special day!
Party Special Offers
Please note: Only one offer or discount may be applied per booking.
An Incredible Weekday Party Discount!
Take advantage of our discounted weekday party pricing with a Splashplex party package starting at just $395. It's one of our best party deals of the summer!
Offer automatically applies to your package*
All Day Play Party Bonus!
With a Splashplex Birthday Party, guests can enjoy the waterpark all day, even after the hosted celebration ends.
Upgrade to the Summer Ultimate Party for even more fun! Start with your hosted indoor party, then use your wristbands to enjoy the waterpark for the rest of the day.
Summer Party Early Bird!
Plan ahead and save! Get $50 off when you book your Summer Party before June 19th!
Offer automatically applies to your package*
Party Packages
Choose the party that's right for you!
Choose your summer party
Tap a package to see the full party details.
Waterpark celebration
Splashplex Party
From $600 + tax
Splashplex waterpark access · Reserved shared celebration table
View party details
Splashplex Party
3 hours
Up to 10 children
Splashplex waterpark admission for each child
1 slice of pizza, drink & vanilla cupcake for each child
Reserved table in a shared space
2 party parents + 8 additional adults
All-access celebration
Summer Ultimate Party
From $900 + tax
Early bird: $850 + tax
Indoor rides, attractions & Splashplex · Private room for the first 2 hours
View party details
Summer Ultimate Party
The all-access summer celebration with indoor fun, Splashplex, and private-room time built in.
3 hours
Up to 10 children + birthday child free
Indoor rides & attractions plus Splashplex access
2 slices of pizza, 16 oz drink & vanilla cupcake
$10 Fun Card + continued Splashplex use after the indoor party
2 party parents + 8 additional adults
Which party fits your celebration?
See the key inclusions side by side before you book.
| What’s Included | Splashplex PartySplashplexFrom $600 + tax | Summer UltimateUltimateFrom $900 + tax |
|---|---|---|
| 💦Waterpark Access | ✓ | ✓ |
| 🎢Unlimited Indoor Rides & Attractions | — | ✓ |
| 🎉Private Party Room | — | ✓ |
| 🪑Reserved Party Table | ✓ | — |
| 🎮$10 Arcade Fun Card | — | ✓ |
| 🎂Birthday Child FREE | ✓ | ✓ |
| ⭐Best For | ✓Waterpark birthday celebrations | ✓The ultimate Funplex birthday experience |
Splashplex Party
Starting at $600
Time
3 Hours
What's Included
Includes up to 10 Children
Plus FREE Birthday Child
Includes Splashplex Park Admission for Each Child
1 Slice of Pizza, One Drink, and a Vanilla Cupcake for Each Child
Reserved table in a shared space
Park Admission for 2 Party Parents Plus 8 Additional Adults
Extra Guests
Additional Child
$38
Additional Adult
$20
Includes Splashplex Access. *Does not include food or drinks.
Summer Ultimate Party
Starting at $900
Time
3 Hours
What's Included
Includes up to 10 Children
Plus FREE Birthday Child
Includes Park Admission, Unlimited Indoor Rides & Attractions and Splashplex Waterpark for Each Child
$10 Fun Card for Each Child
2 Slices of Pizza, One 16oz Drink, and a Vanilla Cupcake for Each Child
Private Room for the First Two Hours
Park Admission for 2 Party Parents Plus 8 Additional Adults
Unlimited Use of Splashplex Waterpark after the Indoor Party
Extra Guests
Additional Child
$55
Additional Adult
$29
Includes Indoor Admission and Splashplex Access. *Does not include food or drinks.
Pick 3 Party
$375 +tax
For information on private room availability, please contact our Party Office at (973) 428-1166 or email thomas@thefunplex.com.
Looking to plan a Fall Party?
Party Rooms & Spaces
We have several party spaces for any size party, from an open shared room to the ultimate experience in our VIP Bowling Suite.
Upgrades & Add-ons
Take your party to the next level and enhance the entire experience!
Big FUN Upgrades
Popcorn Goody Bag
$3 each
30 Credit FunCards
$10 each
Balloon Bundle
$30
Chicken Tender Upgrade
$4 each
Upgrade your party meal from pizza to 3 chicken tenders and fries per guest!
Souvenir Candy Cup
$15 each
Add a sweet surprise to your party with our souvenir cups filled with assorted candy.
Celebration Bundle
$110
Create the ultimate photo moment with three decorative backdrop arches, a light up “Happy Birthday” or “Let’s Celebrate” sign, and a vibrant balloon set.
Food Upgrades
Appetizers
Our appetizer platters are perfect for sharing and keeping the party going, featuring your choice of crispy golden French fries, cheesy mozzarella sticks served with marinara, and bite-sized chicken nuggets with a variety of dipping sauces.
Entrees
Our entrée selections are crowd-pleasers made to satisfy every guest, featuring your choice of creamy penne vodka tossed in a rich tomato-cream sauce, classic chicken parmesan layered with marinara and melted cheese, and an assortment of fresh pinwheel wraps filled with tasty deli meats, cheeses, and crisp veggies.
Desserts
Finish the celebration on a sweet note with our party desserts, including a sweet and salty snack tray for the perfect mix of flavors, a decadent cookie and brownie tray baked to please every sweet tooth, and cool, colorful Dippin’ Dots for a fun frozen treat kids love.
FAQs
What is included in my party?
Each party includes balloons, paper products, a dedicated party host and set-up and clean up. You may bring and set up additional decorations if desired. You will have access to your party room or table 15 minutes prior to your room time.
Does the package include invites?
No, unfortunately we do not include invites.
What can I expect from my Funplex party?
For the Pick 3, Ultimate, and VIP Ultimate packages, guests will enjoy the activities and games you’ve selected for your party. Afterward, everyone will gather at the party table or in the party room to enjoy food, beverages, and cupcakes. Once the kids are finished eating, they can return to the activities and continue having fun until the end of your scheduled party time.
Please note: The structure is different for Xtreme Teen packages. For details, contact the party office directly.
How long is my party?
Pick 3 parties will last 2.5 hours, the Ultimate Party lasts 3 hours and the VIP Ultimate party will last 4 hours. With the Pick 3 you will have a table for the first 1.5 hours of the party and with the Ultimate and VIP Ultimate, your room for 2 hours.
When do I need to let you know the final guest count?
We will contact you 2 days before your event to finalize your guest head count, food, and any other add-ons. This will guarantee adequate table/room size and an appropriate number of hosts. We also recommend that you provide a guest list so our party check-in can aid in making your event seamless!
Do I have to pay for adults coming to the party?
All packages include 10 adults, the birthday child's 2 parents, plus 8 additional. Every adult above that, even if they are not participating, will need to be paid for.
How and when do I pay for my party?
Your final balance, head count and food orders are due a minimum of 2 days before your event. Accepted payment methods are credit card or cash.
My host was excellent how do I tip them?
A 10% gratuity is automatically applied to all parties. If you would like to tip in addition to the 10% you may do so by cash or card.
When should I arrive for my party?
Please arrive a minimum of 15 minutes early to your event.
Is parking included with birthday parties?
Yes, parking is included for birthday parties at The Funplex East Hanover. Please contact the Party Office for details and arrival instructions.
How does the All-Year Member Birthday Party Discount work?
As an All-Year Member, you receive 15% off the base price of a birthday party package. This discount cannot be combined with any other offers or promotions, including discounted weekday party pricing. The discount applies only to the base party package and does not include add-ons, upgrades, food and beverage, decorations, gratuity, taxes, or any other additional charges. The discount must be applied at the time of booking. Additional restrictions may apply.
Can I bring in any food?
No outside food or beverages are permitted with the exception of cake or cupcakes. The Funplex does not allow ice cream or ice cream cakes.
Do you have a restaurant/bar?
Yes! We have two indoor cafes, the PitStop and Boardwalk cafes as well as a seasonal outdoor café, Sharkey’s. We have The Surfside Bar located in The Boardwalk.
What is your policy for leaving a deposit?
A valid credit is needed to guarantee your reservations. We require a 50% deposit to book, your final headcount and final payment are due 2 days before your party.
What is the rain policy for parties?
In the event of rain we will reach out to see if you would like to reschedule the date or move to an indoor event. The Splashplex only closes if lightening is within 5 miles and once the lightening passes, Splashplex will reopen.
Book a Party
There's three ways to get your party started!
Help me Decide
Find Your Perfect Package
Answer a few quick questions about your party, your vision, and your budget, and we’ll match you with the package that’s just right for you.
I'm Ready!
Book Online
If you already know your package, your space, and of course, your date, then you can book online right now and lock in your party.
I have questions
Contact Us
Office Hours: 9AM-5PM daily
We’re happy to walk you through the packages and upgrades and help you curate the perfect birthday party.