We're sailing on the Disney Magic in April in a few months, and I had a question on if the Disney Magic Band+ can be used to open more than one stateroom? My in-laws are staying next door to us (in a connecting room) with my youngest child. I've read that you can get an extra stateroom key from guest services, and that the KTTW cards can only be assigned to one stateroom door, but wonder if Magic Band+ can be used for more than one room.