Each person receives a KTTW card (Key to the World card). Each person needs it to board and disembark the ship at all ports. It also serves as your room card and it is how you charge any purchases to your account. Enjoy your cruise.
Where Group = Stateroom. Well, at least in Miami...
When I took my parents on the Magic in Feb 2017, we were in different staterooms and were sent to different check-in agents. We had the same Boarding Group, but they had a card and I had a card.
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If you make your Disney Cruise Line reservation with Dreams Unlimited Travel you’ll receive these incredible shipboard credits to spend on your cruise!