... except for the very early (Character Breakfast) buses.
Also, there are direct buses to each theme park from 1 hour before park opening until about 11 a.m. (But you might get unlucky and happen to get an extra bus that's stopping at all 3 resorts.)
JMO, but I thought the 2 extra stops from ASsports were much shorter than the extra stops when we stayed at the Swan (Boardwalk, Dolphin, Y&B, don't recall the order) & POFQ (to Riverside & sometimes to Old Key West).
At All Stars, all 3 resorts are basically next door to each other for p/u & then you all leave the main entrance to the All Stars together. The bus really isn't driving out of its way & then you're off to the park. And many times we didn't go to either of the other 2 after being picked up, this was 2 years ago, but I thought the buses were pretty efficient