Very simple. When you check in, they'll give you the "old fashioned" plastic cards. Last trip, my Magic Band wouldn't open my door one day, so I went to the front desk. Turns out my MB had gotten deactivated somehow (it was an old MB, so who knows). Although she reactivated it, she also gave me a plastic card to use if I had any more problems. Just for comparison, I tried using the card (don't know how this got bolded). The card never let me down-I used to have trouble at the tap styles with the MB about half the time. This may not be popular, but at the end of the day, I went back to my room and threw my MB in my suitcase, never to be used again. Since it seems I always carry ID and gift cards, it's easy enough to add my room card to that pile.