It's $20 for the whole day. I was able to get lunch and come back. Residents of the resort across the street gets a discount. I was not a resident. It was so much fun. Just don't wear you good clothes, the tubes are a bit dirty.
We went for the friday night special, 5-8pm for $16 per person. At first it didnt look worth it, but it ended up being pretty fun, we had kids ages 4, 7 and 11 eith us and they all enjoyed it as well as us adults.
Thanks! Your answer is awaiting moderation.