My standard Disney lens is a 28-75. Used on a crop body that makes it even less wide than it already is. Overall I find it applicable to most situations in Disney World, but I do think the lack of a real wide end has limited me. In particular I can't get the kind of fireworks shots I used to get with the 17-55 kit lens. I have the Tokina 11-16 now, I'll have that available the next time I go, but that's actually going to leave me with a significant and awkward gap (between 16 and 28), I suspect. It'll be interesting to experiment with it, though.
The first year that I had the 70-200 I tried using it all over the parks and found that it really wasn't that useful. I kept it on because at the time it was my one "good" lens. But outside of Animal Kingdom I've only really found it to be appropriate for use to get shows and such.
Another way of looking at it is that I think that creatively I can deal with the 28-75 best. I'm having a lot of difficulty figuring out how to use the ultra wide, and at the other end I've heard that telephoto landscape shots can be good but I haven't really worked out how to accomplish that either. Except for one shot I got of SSE from across the lagoon, I think that worked out well. It was a shot of necessity, I wanted a shot of SSE with the 70-200 and the way to do it was from long range.