I know for certain they don't use WDW Transport. It's right there on Hotel Plaza, but I'm not sure it uses those DTD area hotel shuttles (which are a pain) or if they have their own from that hotel. Regardless, those are probably the best option, regardless of how much of a pain/slow they are. No free theme park parking or anything, either, staying at the Hotel Plaza resorts. Also, if the boys walk over to DTD, those busses don't go to the parks - resorts only - and even though it looks close, that walk takes a good while. I made the mistake of doing it once.