We were at SSR from 4-Dec to 13-Dec. The busses were usually empty as others have stated. On one evening, we were returning from one of the parks, EPCOT I think, and has some people on board asking whether the bus dropped off near DTD. By their conversation, I surmise that they had been told by the Transportation folks that it was their fastest ride to DTD. Upon checkout I pulled aside a front desk manager, Jon, to let him know how unhappy I was with the bus service during our stay (30-45 min waits) and of the experience with the "hoppers". He said that he had heard complaints from other guests about the slow busses, but had not heard any complaints about people being told to get to DTD via SSR. He said he would talk to the Transportation folks to have them stop recommending this route. It's not too bad now, but I can see it becoming a problem when the other Phases are completed.
So, 2 things:
1. If you get slow service from the busses at SSR, COMPLAIN EARLY to the desk manager! The more complaints, the faster they can get it resolved.
2. If you come across people hopping the bus to get to DTD, COMPLAIN to the desk manager also!