Hi Rebecca,
Thanks so much for your question. Since
Disney's All Star Music Resort has ample amounts of Guest rooms, there is a chance that you may be put in a room that isn't near the bus service. I've found that at the Value Resorts, depending on where you are situated, you may have to walk a half a mile, at most, to the bus service. Although it may take you a few minutes to get to the buses, you most likely won't have to wait for too long, since Disney puts a good amount of buses in rotation to the Value Resorts, due the large amount of Guests that stay there.
I hope this answered your question, Rebecca. If you have any more questions before your vacation, please feel free to ask us at any time.
Have a fantastical Disney day!