I am probably just repeating what a lot of folks have said, but.... we also go during value season, when the park hours are a lot shorter. When we last went our DS was almost 4 and our DD was 6 1/2. We did not take breaks during the day at all. We had one day, mid-week during our 7 day trip that was our "day off" from the parks. We spent the morning at DTD, had lunch there and then returned to our hotel to swim and have supper. But all the other days we did the parks from opening until closing. The latest days were the day we arrived (evening flight, kids in bed at 9:30pm) and the last night (figured we would make the most of the last day... kids in bed about 9pm). We did use a stroller for our DS and I'm sure that helped keep him from being too tired. I also tried hard to stick to their 8:30 pm bedtime. Keeping my kids in a somewhat normal routine for bedtime helps keep them from getting too cranky!
Also, I planned our first day in the parks to be at AK, knowing that it has the shortest hours and we would be tired from the late flight the day before. They were in bed by 6:30 pm that first day (AK closed at 5pm). If I felt we/they needed a break during the day, we found a quiet place to sit and have a snack (including the train ride at MK and other such long, quiet rides), or just rest our feet (son laid on the floor at my feet during Hall of Presidents.... didn't sleep, but just "vegged".) That always helped us get re-energized and re-motivated to keep going. Most nights we were riding rides until the last possible minute!
Keep in mind that a trip back to your hotel (either off-site or on) will involve probably a bare minimum of two hours. An hour travel time back and forth (from wherever you are in the parks when you decide to leave, to the TTC or parking lot or bus stop, back to hotel can be a long time!) and a minimum hour to rest.
ONE LAST THING.... to JCEMom.... why would you not get to the parks before 11 am? Are your children late sleepers? Or did I misunderstand you? BY ALL MEANS, get to the parks as early as possible. I certainly wouldn't wake a sleeping child at 5 am, but see no reason not to be at the parks by 9 am. Especially when the parks close so early..... Just my opinion of course!!
