Thanks VWL mom - I do prefer to manage my own trip, and it was very easy. After reading your post I realized there was no reason it should cancel reservations, since obviously people make dining ressies even when they are staying off site (although I do wonder what would happen if you tried doing it in that first "10 day" window??). So I just went in and booked a room at the new price, and then cancelled the previous reservation. To anyone else considering doing this - I booked the new one FIRST because I think they have a limited number of rooms at discount prices (maybe?) and thought it would be awful if I cancelled and then couldn't re-book!