Make sure to get her an "It's my Birthday Button". They have them available at Guest Services when you enter the park - and they are free. There is one for each park (MK and MGM are the same) and there is one for Downtown Disney. We were down there in May for my 40 something birthday. Everyone wishes you a Happy Birthday. We even got free deserts at some of the restaurants. I got a free minicake at 'Ohana, a free birthday cupcake at the castle for lunch along with a Magical Moments Certificate and a free chocolate mouse desert in Canada along with a birthday card signed by all the CM's. I also got a card from Mickey and balloons in our hotel room. WDW is the best place to spend you birthday. My boyfriend wants to go next year for his birthday.
Linda