We travel from southwest Missouri to the St. Louis region each year to meet family members from northern IL for camping over Memorial Day weekend. We always have a hard time getting sites with hook-ups at state parks and such, and would like to explore private RV parks. We don't want a parking lot for RV's though - we need space for 2 boys to ride bikes, play Frisbee with the dogs, have campfires, etc. Would love swimming facilities if possible. 100 mi. radius from St. Louis at absolute max. Reasonable proximity to I-55, I-44, I-70 or I-270 preferred. We welcome your suggestions. Thanks!