I am a Platinum Member and used my rewards points to reserve a room for two nights at the London Marriott Park Lane Hotel from 9/10-9/12/2013. My travel plans changed and I will be arriving in London a day earlier on 9/9/2013. When I attempted to reserve a room using my rewards points for 9/9/2013 I received a message that their were no rewards rooms available for that day. Any suggestions, I don't want to have to move hotels after one night. Thank you.