Buses run for two hours after park closing, but even if you're there later than that you are OK, because Disney has buses marked 'Special' that pick up from RFC until everyone is gone. When you come out of RFC just walk toward the buses and a CM will be there with a radio and will ask where you need to go. We used those buses in May '05 and also in Jan '06 to get back to Boardwalk and POP respectively. In May '05 there were quite a few people going to different resorts, but in Jan we were one of the last ones out and my GD and I had the bus to ourselves.