Neptune Island is the splashin’ fun place for all your birthday adventures! Let our Crew help you plan the perfect Captain’s Celebration for your special birthday honoree starting at just $249!



Package Includes:

  • Waterpark Admission for 11 Guests- Including FREE admission for the Birthday Honoree

  • 2 Large Cheese or Pepperoni Pizzas

  • 4 Pitchers of Pepsi Products or Water

  • Special Party Pavilion with Host for 90 Minutes (Plus…Your Neptune’s Party Host will attend to all your needs, including set up & clean up)

  • Souvenir Neptune Island Big Squirt toy for Birthday Honoree

Party Price: $249 + tax
In-City Residents Package Price*: $229 + tax


Additional Add-Ons:

  • Additional Guests: $14.99 (25 guests max)

  • Chaperone Tickets: $9.99

  • Big Squirts: $7.99 each

  • Additional Pizza: $18.99 each (up to 2 additional; maximum 4 pizzas per party)

  • Additional Pitcher of Soda: $6.99


  • A 50% deposit amount will be deducted from your party bill at the time of payment. We require a 14-day notice of cancellation in order to refund your deposit. In the event of cancellation we will make every effort to reschedule your party.

  • Birthday reservations may not exceed 10% of original order and no more than 25 participants in total. If more than are guaranteed show up, we may not be able to accommodate the additional guests as all other Party Pavilions may be reserved.

  • Early check-in, late check-out of Party Pavilion is not permitted.

  • Upon check-out of Party Pavilion we invite your family and friends to continue their experience at Neptune Island Waterpark.

  • No outside food or beverage, excluding birthday cakes or cupcakes, are allowed. Please be advised we are unable to store any cakes or cupcakes. As a friendly reminder we do not allow ice cream cakes. We provide napkins, plates and utensils during your party. We encourage you to make your birthday special, by bringing in decorations.

  • By entering our premises, you understand that you may be photographed, filmed, or videotaped and you hereby give City of Hartsville and Neptune Island Waterpark the unqualified right to take pictures and/or recordings of you and grant the perpetual right to use your likeness, image, photo (collectively, “image”), without compensation, for broadcast or exhibition in any medium and to put the finished pictures/recordings to any legitimate use without limitation or reservation. You hereby waive, release and forever discharge the City of Hartsville and Neptune Island Waterpark from and against any and all claims or actions arising out of or resulting from any use of your image.

*In-City Residents Discount will be applied to the remaining balance due at the time of your party. Proof of residency, such as a current City of Hartsville Utilities Bill or Voter Registration card is required for In-City Residents Discount.