So, you never encountered any full buses (i.e., packed to the point that no one else could safely board) during your stay(s) at those resorts?
I have stayed at YC many times. Morning buses to the MK usually stop there, then BC and sometimes also BW. I have definitely had it happen that I have gotten on at YC and by the time the bus gets to either BC or BW, the bus is full and no one else can board. This does not happen all the time, but has happened occasionally.