I planned for a break/nap each afternoon since we were taking our DD4 for 7 days to the World. That was the greatest thing ever!! We didn't have any meltdowns from being too tired/hot and my DH and I felt refreshed and ready to go each evening as well. We got to the park, usually the one with the early EMH, got in the big rides, a couple of shows, ate lunch, then headed to the hotel. Spent a couple of hours there and returned to a park or resort where we had the ADR for dinner and went back to a park each night. We missed the large crowds, heat, rain showers, and the max time we waited in line for a ride was 15 minutes. I am such a believer in this strategy, that I would do it even if I were going without a child.