Hi Keirsten,
Thanks for sending me this question, and what a great one it is! Both the Armed Forces Salute military discounted tickets and the standard tickets with the MWR/ITT discount can be connected to your My Disney Experience account and your MagicBands.
Once you receive your vouchers, look on the back for a 10 to 12 digit number. Open your
My Disney Experience account, and click the
My Reservations and Tickets section. In there, look under the
Tickets and Passes section and click
Link Tickets. You'll be able to add each voucher number, assign them to your MagicBands and make FastPass+ selections as well. Please keep in mind that you will need to hold onto the actual vouchers and "activate" them at Guest Services on the first day of your trip, but once they are activated you'll be able to discard them and use your MagicBand exclusively.
I hope this answered your question, Keirsten. If you have any more questions before your vacation, please feel free to ask me at any time. I'm always here for you.
Have a fantastical Disney day!