Great Waves Waterparks is a great place to host your child’s next birthday party in an exclusive party area! Take a moment to check out the party packages and don’t forget to print your free invitations once you book. Please note: dates and times fill up fast.

Big Splash Party at Cowabunga Cove, North Shore and Tiki Hut.

Great Waves Waterpark offers two birthday areas for Big Splash parties. Each area offers two picnic tables and a large shade structure to keep you and your guests cool on a great summer day. Maximum of 25 guests – Minimum of 10 must be paid at the time of reservation.

Cowabunga Cove: Located centrally in the waterpark near the Minnow Bay baby pool.

North Shore: Located on the north end of the birthday party deck next to the wave pool.

Tiki Hut: Located next to Paradise Play.

A minimum of 10 guests must be paid at the time of reservation.

Big Splash Party Times:
  • 1:00 p.m.-4:00 p.m.

10% discount for parties booked Monday-Thursday.

$45 per child, includes the following*:

  • Admission to Great Waves Waterpark ALL DAY
  • Private Party area for 3 hours
  • Free Chaperone for guests under 12 years old 
  • Personal party assistant for the duration of the party
  • Gift/Cake cart to use during party
  • Special gift for the birthday child
  • Valuable coupon for all birthday guests
  • Free Printable Invitation.pdf

*Birthday Party Package does not include food.

Add-on items available for purchase

  • Pizza with plates and napkins
  • Drink Pitcher with cups
  • Dippin’ Dots 


  • Deposit to cover a minimum of ten (10) guests must be paid at the time of reservation. Your reservation is not final until the full deposit has been received.
  • No outside food or beverage, except birthday cake/cupcakes and bottled water, may be brought into the waterpark. We are not responsible for holding or storing cakes.
  • Additional non-party guests will be charged general pool admission. Additional food and beverages may be purchased as add-ons.
  • In case of inclement weather or waterpark closure, the party may be rescheduled to another available date at no charge.
  • Cancellations or rescheduling more than 2 weeks before the event shall incur a $20 fee. Cancellations or rescheduling (unrelated to weather) less than two weeks before the event will result in a loss of half of the deposit. Cancellations or rescheduling within 48 hours of party will result in loss of deposit.
  • In the event of cancellation due to facility closure, a full refund will be made, or the party may be rescheduled to another open date. 
  • Package includes three (3) hours of exclusive use of the party area. See party details.
  • One free adult chaperone per guest, 12 and under.
  • Party packages do not include plates, napkins, cups, and plastic flatware unless food/drink add-ons are purchased. You may bring additional decorations.
  • Bags, coolers, and backpacks will be checked before entry for food, beverage, and other items.
  • Most birthday areas have maximum occupancy. Please be sure to reserve the appropriate size party area for your party.
  • Payment is due in full by the end of your party for all add-ons and additional guests.
  • Lifeguards are on duty to respond to aquatic emergencies. Parents/chaperones MUST watch their children.