I plan the overall trip as best as I can to allow me to have the maximum amount of flexibility for the daily details to do what I want, when I want to do it, in flexible coordination with anyone that's sharing the experience with me.
I take my flexibility to the extreme. I coordinate my vacations to be about 3-4 weeks long, during a low season period, with a premium annual pass. I schedule two vacations 11 mos. apart to be used during the valid one year period of the pass. So I basically get about 40-60 days out of the pass, which is less than $20/day. I always have a car. I visit the parks for shorter lengths of time each day than most people, on average, but I think I enjoy it more that way. I see everything that I want to see as much as I want to see it. I spend a lot less than average too, since I stay off-property and mostly live like a local..
I spend quite a bit of time doing non-Disney park things too. Frankly, I think families that go to WDW and Universal without taking their kids to KSC have their priorities askew. A KSC trip is easily worth many years worth of science/tech education and motivation for kids. Seeing night launches of the Space Shuttle and other missions were very special events for me, particularly since I got to personally meet NASA Astronaut Story Musgrave at one launch.