We doing 6 days too. We are planning a day each at each water park. Figuring we are going end of Sept. and expecting it too be hot and humid, we are "thinking" (since our plans change almost daily now) 2 park days, followed by a water park, then 2 more park days and the last day at the water park (we drive so we can still hit the road home early after a water park). Of course, weather forcast will help us decide towards trip time & the park hours will factor in as well.