My wife and I are commandos, definitely at first. I have this sort of mutant ability to never have to wait in line, so it works for me. (note: ability does not work on Soarin', but does work at other theme parks outside of Disney...)
One of my friends who is a local, went with us to see the updated Haunted Mansion year before last. We got in line which was stretching past the entryway to Fantasyland.
He turned to me and said: "Where's this magic power you have?"
Just then, a parade or wild west show started in Frontierland and entire line ahead of us just drained away.
Last September, my wife hit all of the rides in Epcot and the Magic Kingdom the first day, all of DHS and Animal Kingdom the next. After that, we spent the following 7 days resting and doing whatever we felt like.