[BaaBeE9]

Closed loop sailings (all Disney cruises in 2009) don't require a passport.

It has to be the original with the raised seal or stamp from the state. Kids just need the birth certificate. I recommend getting a passport just in case. The wait for one isn't nearly as bad as it was. Also, if for some reason you need to fly back from your cruise, you'll need a passport to get back into the country by air.