Not necessarily. I can see being "go go go" at DLR just because doing that means it's possible to see everything. Trying to see everything is a reasonable goal.
WDW, OTOH, has so much to offer, particularly if you include all the live entertainment, and especially if you include things like the resorts and many of the things they have (performers at the boardwalk, carriage rides, all the water craft, etc.), that there is no possible way to "do everything." For me, at least, recognizing it was impossible to do everything meant I was much more relaxed -- since I can't "do everything", and it's inevitable that I'm going to miss some things, then so long as I'm having a good time, it's all good!