Ter aanvulling, gelezen op theme park insider: It's not as easy as showing up at the entrance gate with a birth certificate or driver's license. You should first register on the Disney theme parks website to claim your birthday ticket. (If you do show up at the park without registering online, you'll have to go to the Will Call window to do the sign-up there. Trust me, you won't want to wait in that line. Sign up early.