My family loved the kids clubs. I remember going the Never Land Clubhouse when I was a kid in the 70's! We made use of the Lilo's clubhouse at the Polynesian the most, and also the one at Animal Kingdom Lodge.
They were a great deal! I could check him in at 4:30pm, order his dinner, and just needed to be back by midnight to pick him up. I thought it was only $55 for the night, and that included dinner. (Obviously this was much more economical for our family since we only have one kid.)
And he always loved it! I think one time we made the mistake of coming back for him at 10:30pm, but they were in the middle of a movie and he didn't want to leave. In fact the kid's club at Polynesian was one of the reasons we bought into DVC there.