I do a little planning. We check park hours and even though we stay on-site, we try to avoid EMH. Once we know which parks we have planned for a certain day, we just decide what our first two or three moves are, then we just wing it. My wife and I both are used to waking up early for work so we make it to the parks for rope drop without a problem. I can't remember the last time we slept past 7:30 anyway.
At MK, if you have kids, I understand going to fantasy land first. If not, I would suggest picking left (pirates, splash, thunder mountain) or right (space, buzz, monsters laugh floor), and then touring the park in a circle.
At DHS you kind of have to go straight back to midway mania if you want to see it. Now you need to decide how many times you want to ride midway mania. If once is good enough, I would skip the fastpass and just get straight in line.
The last time I went there, I was talking a very nice guy waiting for rope drop. We both went straight back to the attraction. My wife and I got in line for the ride. He went and got fastpasses while his family waited for him on the side. We actually got off the ride and walked out the building as he was just finishing getting fast passes. The lines for fast passes can be really bad.
After that ride we go back to TOT and RNRC. We fastpass one and ride the other. After that we just wing it.
At Epcot, I would go straight to Soarin'. Here also, we skip the fast passes and just get in line. If you are there at rope drop, it takes no time at all. Then we go to TEST TRAC, where we get fast passes and then get in line for the ride (its our favorite in epcot). After that, its back to our laid back touring style.
AK, I probably won't be a huge help. While we do like it, its our least favorite park. Last time there, we just went back to Everest. It wasn't a very crowded time of year but we were able to ride it 3 times in a row, never waiting more than 10 minutes. After that we just go ride Dinosaur and watch ITTBAB. Then we hop somewhere else.
This is how we've been doing the parks for years, and we see no reason to change.
Another thing, we also know when and where we want to be for the fireworks/nighttime shows.