ok. currently i am trying to schedule a trip to WDW from Sept 12-19. if the free DDP does come out, of course i will take advantage of that. i'm telling DBF that we should stay at a value to save some money ( we are trying to buy this townhouse..) , possibly POP. however, the one day that we are there, sept 15th is his 25th birthday. so i thought that maybe i would surprise him and let him think that we are staying at POP and then later on maybe upgrade to a moderate like POR if they have rooms left. we stayed at POR last year and he really liked it. can i do that? book at one hotel and "upgrade" to another a few months later?