MMV on this one, as I think they do try to distribute the players around the park. One thing to be aware of is that although there are game hotspots all over the park, the sequence is set up so that there is a vignette in each land. This means two things:
1) When you are playing you will criss-cross an individual land to go to each hotspot, but you will not criss-cross the whole park to get from one hotspot to the next.
2) If you want to take a break, it's best to make sure you have done all the hotspots in one vignette / one land. Otherwise you *will* have to repeat the first hotspots from that segment to rejoin your place in the story.
We really like both the MK and the World Showcase version -- they are a little different in the play. In the MK, all the stops are little movie clips that give you more of the story and tell you where to go. In Epcot, you are guided interactively by a cell phone, so you have things like "go to X place and press the button on the display", which causes some cool thing to happen. Then you get the next set of instructions from the phone. It is not as disconnected as I'm making it sound, but the point is that you get cool "results" that integrate into the story from following the instructions, not the story itself like in Sorcerers.