Hi Jessica,
Thank you so much for visiting the Disney Parks Moms Panel with your question!
MagicBands are a great way to have so much right at your fingertips - or really, on your wrist! Your MagicBand can contain information such as you room reservation so that the MagicBand works as your room key, for your
Disney's FastPass+ selections, and for your Disney theme park tickets.
To be sure that everything is linked, you need to use your
My Disney Experience account. Using this account, you can see your tickets, resort reservations, and Disney's FastPass+ selections. You will also be able to see your MagicBands once they are issued. As long as you are using your My Disney Experience account to manage all of these, everything should be automatically linked to your MagicBands. My Disney Experience will prompt you to add reservations such as resort reservations if it sees that you do not have any.
I hope that this information is helpful for you, Jessica! Please do not hesitate to ask if you have any further questions.