The other posters have hit it on the head: some places may do something special, some may not. Nothing is guaranteed and anything you receive is just some happy pixie dust.
All that said, we celebrated our son's 13th birthday at Disney in January. Here's some of the special attention he received while wearing his button:
- Birthday cupcake at Chef Mickeys (no placemat)
- Birthday cupcake and a King's crown at 1900 Park Fare
- A card signed by all the Pooh characters at Crystal Palace
- Double dessert (mmmm....lava cakes

), a beautiful certificate, and a card signed by the every staff member at Mama Melrose
- A giant birthday sundae at Sci-Fi
- A free throw at the basketball game in Dinoland at AK
Plus HUNDREDS of "Happy Birthdays!" from the CM's, a bus driver who had the whole bus sing to him on the way to AK, and a group of CM's who stopped to serenade him with the happy birthday song at AK while we waited for the parade.
None of it was expected, so everything was a delight. He had no preconceived notions of any kind of freebies, nor did he feel he deserved anything special.
Just have your DD wear her button, and if something happens for her, fantastic! Otherwise, if you want to be SURE that there's a treat of some sort, make sure you order a cake ahead of time, and maybe some of the extra stuff they have introduced under their "What Will You Celebrate" promo.
Have a wonderful trip!!
