Bringing the right things to Splish Splash will make your experience much more enjoyable. First and foremost, you'll need to bring a bathing suit. If you don't have one, you can always purchase one at the park. You'll also need to bring a towel to dry off after you're done swimming. sunscreen is also a must-have, as the sun can be quite strong near the water. Finally, be sure to bring some cash for food and souvenirs.