My recommendation is Cindy's Royal Table for breakfast with the princesses. The princesses all sign a 'birthday sheet' and the bday girl gets a special dessert (I think it was a cupcake).
If you can snag first seating, you'll also have the advantage of finishing your meal just before park opening and have a great opportunity to ride quite a few rides with no lines before the crowds are let in.
I brought my 3 nieces, 1 nephew and my DD and the look in their eyes was priceless.
As you may already know the ressie is impossible to obtain if you don't start dialing in 5 to 10 minutes prior to 7am on the 1st avail booking day.