Hi Wendy - I recently had a chance to see the new in-room celebration packages and they are truly fabulous! To book one, you can contact the Walt Disney World florist - their web site can be found
HERE.
There are two in-room birthday celebrations available. Mickey and Pals Big Birthday Wish features presents from Mickey, Minnie, Goofy, Pluto, and Donald and the last time I checked was priced at $395. A smaller package called Mickey's Birthday Wish was priced at $210 when I last checked. There are also a few products available that you can add on to any celebration. Keep in mind that prices, as well as packages, are subject to change.
Don't forget to collect a birthday button at guest relations when you arrive at the parks! You can also order birthday cakes to be served at many of the Walt Disney World restaurants. You can call the cake line at (407)827-2253 to reserve.
Have a great celebration!