It also depends on what resort you are are trying to get to in the first place. For example, to get from SSR to, say, BWI, it should be quicker to just take a bus from SSR to DHS and then either walk or take a boat to BWI. To get from SSR to a monorail resort, it'll be easier to take a bus from SSR to MK then hop on the monorail. When you are talking about getting from one resort to another while the parks are open, it is usually a lot easier to go to the closest park rather than to DTD. If it is after the parks close, you have no choice but to use DTD. As a PP said, the all around quickest way to get from resort to resort is by taxi, but I personally don't mind using Disney transportation even with the transfering/traveling.