It seems like they split the old bus route that included all of the Epcot area resorts into two groups, each with their own buses: the BW, Swan, and Dolphin in one group and the YC, BC, and BCV in another. There may be seasonal variations depending on how busy these resorts are. During our most recent trips in January, March, and June of 2016 and January and March of this year, staying at the BW, the bus from the BW to AK stopped at the Swan and then at the Dolphin prior to heading off to the AK. I assume that the bus that serves the YC, BC, and BCV went directly to the AK. It's been a number of years since I've been on a bus from the BW for which the BW was not the first stop. Sometimes the bus makes the stops at the Swan and the Dolphin, sometimes not. From the IG, I would walk to the BC bus stop, since that's the shortest walk and I assume that would be the last stop on that bus route before heading to the park. Someone who stays at BC or BCV would be able to provide a more definitive report.