OK I would say AK would be best. Remember if you are doing DHS then you may want to stay for Fantasmic and so there would be an issue with that. As AK closes early then its not so much of an issue. Either are good options really as it is about the same distance between the two. The easiest way to get to it without a car is just to catch the resort bus from either park to Wilderness Lodge. Then to get back go via another park or via DTD.