If I book an AP room only right now, can I add the dining plan later or will I have to give up my room only ressie and chance losing availability of the resort I want?? We are hoping to go New Year's week which is going to be packed and I am not sure yet whether or not it is worth getting the DDP since we probably are out as far as ressies go at this point. This trip is last minute b/c we just decided to go b/c we APs a few weeks ago. Any thoughts???