Well this brings up another question. Since it consumes a lot of time when hopping from one park to the other, could we maximize our time better by just staying in one park for an entire day rather than jumping from one to the other?
That is a major bone of centention among DISers.
Some hop every day. Others refuse to hop at all. It's a matter of personal preference and touring style; you'll have to find out for yourself which method fits your style better.
My personal style is to hop, almost every day. The only time I don't hit more than one park in a day is when I'm at Epcot (since Epcot is kinda like two parks in one, anyway, and fills up my whole day). But I always have a rental car with me at WDW, and use it to get around a lot more than I use the WDW transportation system.
Park to park transportation is usually pretty quick. I think the most time-consuming trip is between Epcot and MGM via the International Gateway, since the Friendship Launch makes stops at multiple resorts along the way (there is a bus from the Epcot front gate to MGM that is much quicker). From MK to Epcot (or back) also takes a while, because it involves two monorail rides instead of one.
But I don't look on all of those trips as time-wasters, because although I hate waiting for busses, I really enjoy riding the WDW boats and monorails. To me, they are like attractions themselves, so when I ride them the time counts as attraction time rather than transportation time.
The main thing to keep in mind is that the better you know the transportation options at WDW, the easier and faster you will get where you're going.
