When I was there in December at Music, we only shared buses once in 9 days, but like everyone else said, in that case, Sports would be first, then Music, then Movies. And the one time we shared during my stay was when I was getting on the bus at 6:45am to be at MK for an early tour. Even after stopping at all 3 resorts, there were maybe 10 of us on the bus total that morning, so it made sense to share.