at the parks if they share a bus, it would be just 1 line for the all star buses, then it would be the last to drop off. if you leave after events, fireworks etc they ususally have there own buses to each in the evening. If it is in the day or earlier, then they will share.
My problem was in the mornings if you did not get out early. We ususally get to the buses around 9am and if we miss the bus, the next was ususally 20min wait, even if there was still alot of people in line for the next one. You would think the drivers would call the transportation system and have them send the next. we stayed ASMu and one day going to MK the bus was filled, not one seat left, and they still made a stop to the other AS? They only picked up a handful of people to stand, but there was no need for that. The other locations still had a full waiting line for another bus, so i have no idea why the driver did not go directly to the park, when the bus was fun. That was my biggest complaint all week.