Each member of my family (wife, son - 19, daughter - 17) has their own MDE account. However, I'd like to use one credit card for all of us. Do I need to enter it on each of our MDE accounts or does entering it once in my account suffice since we are linked? Thanks in advance.
If you're all on the same reservation, and everyone uses their magicband to charge back to the room, then the hotel will settle all the charges with the credit card on file.
If you have to mobile order, which most quick service restaurants require, then the charge will go directly to your credit card, not to the room account.