Where else can you find a really nice, clean water park without jacked-up prices? Residents get discounted rates, but even if you aren't a resident, it's still a great deal. Residents also get in earlier.
They have a lazy river, 4 slides, kiddie area, lap area, sand pit, picnic areas, pavilion and even cabanas. During safety breaks, slides and lazy river are open, along with adult swim. They have a decent variety of food, drinks and treats at reasonable prices, too. You can bring in your own food and drinks and there isn't anything too nasty about the rest rooms.
Cash or credit.