Most sit down restaurants in the park will give you a standard yellow cupcake with frosting and a candle, if you are wearing your button. A handful do more if a reservation is made on the phone and the cm is told a birthday is being celebrated. The Crystal Palace, at least in the past, puts some glitter on the table and you are given a card that all the characters signed. Anything else is a nice surprise. They can't treat every birthday person to surprises because hundreds of people are wearing a birthday button, or some other celebration button, every day.