We were there January 2014 for the first time in over 10 years. We planned on taking breaks, but just never happened. We are planning on going next May and will most likely take breaks that time though. Since we now know some of the things we do/don't want to do, it should open up more free time. While I get some staying in the parks all day, that's just too tiring for us. We figure in the AM go into a park for a couple rides, maybe stroll around, then back to the resort by late morning/noon time. Then, around 2 ish hop to another park where we have FP set up.
We figure if we go to HS in the AM, we'd just ride RNRC or TSM and TOT. After that we'll most likely head out, maybe after a stroll. Will save the rest of the park for some evening we're there (we most likely won't be doing Indiana Jones or the stunt show). One morning we'll go to Epcot where we'll probably just ride TT or Soarin and Nemo (nephew loves it) then head out. Will explore the park more in depth the evening we spend there. It may seem silly to go to the park for two hours, but this way we get to ride our favorite rides, plus have a couple relaxing late mornings early afternoons.
We won't do this for MK or AK. We didn't go to AK last time, so we'll probably try to cram as much as we can from opening until about 1. Our MK days we'll probably just make that our only park (maybe hop somewhere for show at night).