Welcome to planDisney, Kadi! It sounds like your kids had a great Christmas this year.
Disney Gift Cards are some of my favorite gifts to give and receive because they're so versatile. They can be used for everything from purchasing tickets to buying merchandise to paying for food and snacks so the recipient can use them for pretty much whatever they want! There are a couple of different ways that your kids can use their gift cards and I'm happy to share them with you.
If your kids have smartwatches, then their Disney Gift Cards can be added to their mobile wallet which would allow them to use tap-to-pay at merchandise and food locations. You can add the gift cards to the wallet app on your phone, either Apple Wallet or Google Pay, and it will then be able to be accessed through their watches or their mobile phones.
Kadi, I also considered that you might be asking about
MagicBand+, so I wanted to walk you through that process as well. If you're staying at a
Disney Resorts Collection Hotel, then you can allow your kids to have charging privileges using their MagicBand+. In this case, your kids would use their MagicBand+ when paying for the things that they want which would, in turn, charge to your room folio. You can then have a Disney Cast Member at the front desk of your resort run their Disney Gift Card to pay down the balance.
I hope this answers your question, Kadi, and please let us know if there's anything else we can do to help you plan your magical vacation!
Jessica