TWOOD-
These are all great suggestions. When I was at the CBR in November I had a couple of room requests and decided to simply ask if I could have a card with the Princesses signed in the room for my 27 year old friend!
They were so fabulous because they gave her a balloon, cake, a card by the Princesses, AND a card from the Fab 5 all with personalized messages for her.
I faxed my request 3 days before my arrival and her birthday was 2 days into the trip. I think giving them the advanced notice might have helped things along. She was so surprised!
Brenda