Welcome to planDisney, Heidi! I'm so glad to answer a question for a fellow Texan today.
When you have a
MagicBand, it doesn't link to a specific
Resort Hotel reservation or
ticket but rather, it links to your My Disney Experience account itself so it can access everything over several vacations or if you make any changes to your plans during your trip. So if your MagicBand is listed under "MagicBands and More" in your
My Disney Experience app, you can use it to open your Resort Hotel room door! You don't have to do anything special to link it to your reservation, it's already done.
If you purchase a new MagicBand+ when you're on vacation this week, it will come with
instructions on how to link it to your My Disney Experience account. It's usually as easy as just tapping your new MagicBand+ on the back of your phone and following the instructions in the app! If you ordered a MagicBand+ as part of your vacation package, it will arrive at your door or at your Resort Hotel already linked and ready to go so you can just take it out of the box and use it right away.
I hope this answers your question, Heidi, and please let us know if there's anything else we can do to help you plan your magical vacation!
Jessica