So I just added a single water park ticket to
MDE for my sister. She will have an AP and so needed a separate ticket for our upcoming visit to Typhoon Lagoon. I used the MDE app and scanned in the water park ticket using the QR code. It was quick and easy and it now shows up under "Tickets and Passes" in MDE when I select my sister for our upcoming trip. I assume this means it will show up on her magic band.