we have celebrated a few birthdays in wdw.
my fiance's, i requested a happy birthday phone call from goofy when we checked in at akl, prerecorded message but still cute. i ordered a birthday cake for his favorite dinner location at le cellier steakhouse in canada. which you can do by request for a fee in advance at most signature wdw restaurants. we also ate at chef mickeys, they gave him a cupcake & even made him dance in the parade, it was hilarious & a great picture. and i got a wdw birthday badge for him during our stay.
as a family we have celebrated my mom's birthday at the hoop dedoo revue at fort wilderness, where they call on bday guests. we also had personalized mickey ears she wore as a birthday gift from dtd, and purchased a personalized tshirt that said "i'm the birthday girl" "november __" "walt disney world trip" through the disneystore.com now disneydirect.com, with the princess pattern. she still wears it!
as well as a young cousin on a family reunion in 2000, his parents, my aunt & uncle threw a arcade birthday party at the boardwalk for him & younger family members. they closed the arcade for like 2 hours in the afternoon on free play, had lunch, bday cake & goodie bags. he also wore the bday badge during our stay & the cm's made a fuss.