They share the same amenities (like SAB) and the rooms are approx the same size. Some of the differences are as follows:
- BC is a few hundred yards closer to Epcot IG, while YC is closer to the DHS boat dock (in the big picture of all the walking one does at WDW, this is a nominal difference)
- Virtually all YC rooms have full balconies, while only some BC rooms do
- YC generally has a quieter lobby, since there is no character brekafast there (like there is in the BC lobby)
- Many think BC is kid-friendlier and that YC is somewhat stuffy, but it is WDW, so kids are more than welcome at both.
- YC is closer to the restaurants at YC (Yachtsman Steakhouse and the Galley), while BC is closer to the restaurants at BC (Cape May, Beaches & Cream and the quick service in the BC Marketplace), but it is, again, a very short walk from one hotel to the other
- Morning buses to MK usually stop at YC, then BC, so if it is a very busy time, the bus may fill up at YC, such that BC guests must wait for the next bus