So I know how I can add a credit card to my MDE acct for my upcoming trip but my mom, who's acct is linked to mine, would like to add a separate card to her MDE acct. But when setting up online check-in on MDE, it only shows for me to add my credit card. I haven't yet looked at my mom's MDE acct, so I'm not sure if she can add it there or not. Hoping not to have to go by the front desk and just be able to use online check-in (although would love to see if they have a room we can check into early, so may have to do that anyway).