i have used the one at RPR before. it has been some years though. i think it was $20/hr to keep my kid there. I only left him there a couple hours one day as i took his older sister on the coasters. i was worried at first cause when we got there, there weren't any other kids there at that time. the person running it that night was awesome. i had made the reservation for him earlier and when she saw he was going to be the only kid, she brought her own son in who was the same age. Very nice!
when i came back to get him, he didn't want to leave. he was running around and was begging me to let him go there everyday. this crazy kid actually wanted to go there instead of the parks! they had a lot of activity corners that included a game board section, tv & movies, books, toys, and arts & crafts center (he made me a bracelet). if you need it, you can also pay extra and choose a meal for your child.
it was a big hit and worth the money for us!