Yes, there is a Kids Club at WL. I think it's called the Cub's Den, or something like that. I've taken ds (8) there for craft time in the afternoon, but he hasn't stayed there yet - although we may put him there for a night later this month.
His favorite club is the Sandcastle Club at the Beach Club. He really enjoys his time in the clubs. It's a chance for him to get away by himself for a while. Also, he can play video games to his heart's content, and since I'm a "mean mommy", that is severely limited at home...