We just got back from a week at WDW. There was a knock at the door around 8:30 as we were packing, and as we were leaving the room around 9 I got the impression that the maid was waiting in the hall for us to leave. But we were up and wanted to be out by 9 anyway, as we were just moving to the WL that day (Thanksgiving). Regarding the 'flip side', we arrived to BW around 11, left our bags and went for a walk. When we came back around 1:30 the room was ready for us.
Our move to WL was great, we left the bags with the bellhops at BW, went to Epcot until around 2, came back and got our car and bags, and were into our room at WL by 2:30. All in all, it was a great week.