kaytieeldr said:
Wouldn't the quickest route most likely be to board whichever resort bus comes first, go to that resort and switch to the DTD bus? Or take a taxi?
That depends on the resort.
A bus to one of the monorail resorts would take you way out of the way on a trip from AK to DTD - the MK area is several miles in the wrong direction.
A bus to Contemporary, for example, would take longer to get you to the resort than a bus to CSR, and then you'd have a much longer wait for the bus to DTD, as the bus service at Contemporary is notoriously slow. It's a little better at Poly and GF, but they are still way out of the way for this particular trip.
CSR, on the other hand, is not only directly in line between AK and DTD, but also has some of the best and most frequent bus service of any WDW resort, partly because it's a convention resort. Not only will you not go out of the way, but you will be much more likely to get a bus from AK to CSR faster, and from CSR to DTD faster, than you will at any of the other resorts.
Of course, this is all generalization. Once in a blue moon a different route will be faster, but in general it's better to think about where you are going and how you get there vs. which bus happens to show up first.