I have heard that an advantage of stayin onsite, is that once the main parks (MK, Epcot, etc.) get full you can still get in. Does that also apply to the water parks. When we to DW last time-about 6 years ago, we would hit a park in the am, and then would head over to a water park in the afternoon. We never had a problem w/them being full, but Ive seen alot of posts here about them reaching capacity early.