We've had good luck getting into our room in the early afternoon many times at the Poly. In perhaps the mid 90's, they never seemed to have the room ready early but for several years now, it's been good again. If they can, they'll get you in. Only exception for us was at Poly concierge last Oct. when she said our room wasn't ready around noon but I had the distinct impression that she was lying! That lady is no longer there, though and when we were in concierge in June our room was ready early as it was in March (not concierge).