So here are some more details-
The pricing was about $11.50 per hour per child. You can put them in for as many or little hours as you want while they are open. We had the kids there for 5 hours while we went to Epcot. They give you a pager or just take down your cell phone number (they never called us). It does include a meal (they get a kids meal from Captain Cooks). You drop them off and speak to the folks working there (all SUPER nice!). The kids go through Wendy's bedroom window and they are off! If someone tried to come in to even look at the kids, they wouldn't be able to see them (made me feel better).
My kids are standing here and giving me the low down

They said they never left the club (even to eat) but there was an additional room where they ate the dinner that was brought in. My son loved the electronics - video games and big screen movie. My daughter also liked the coloring stuff. There is also dress up and there were big jumbo cup stacks (sorry, I'm writing this verbatim as they tell me) and they built towers out of the cups so high that they would surround someone and they would knock it over (they are jumping up and down with excitement right now so it must have been fun). They also hung out with other kids.
They immediately wanted to go back the next night and they are giving me the 'please,please,please' can we go back right now

We are heading to WL in May and will try out the Den's club.
I highly recommend doing this. Yes, it was pricey but it ended up being worth it for the adult evening out and the kids LOVED it.