Hi Taemin! Thanks for bringing your question to planDisney.
When you scan into the parks, a friendly Cast Member will snap a quick photo that will assign the ticket to your wife, and from that point forward, it will be linked to her via that photo. So long as they're linked to your account, you'll be able to pull the tickets up on the
Disneyland mobile app at the entrance and use them for entry along with your
theme park reservations. Find linked tickets on the app under the "My Tickets & Passes" tile.
I think you'll like the hands-free bands. You can scan into the parks and
Lightning Lane Entrances with your bands after booking a return time, which is super convenient when you don't necessarily want to pull out your mobile device. You'll also experience immersive features with the bands on certain Attractions and with select Entertainment. They'll light up and vibrate, contributing to the magic! The first time this happened with our family on WEB SLINGERS: A Spider-Man Adventure in Avengers Campus at Disney California Adventure Park, it was a really fun surprise.
You will need to link the bands to your account and assign a ticket to each band, and I'm happy to walk you through this. You should be able to link fully charged bands by tapping the three-bar menu on the lower right side of the app. Scroll down until you see "Account" and look for the "MagicBand+" link. On the next page, tap the "+" to add a band using your device's camera. Just follow the prompts. Once your bands are linked, you can assign them on the previous page by tapping each band on the screen and selecting which ticket you want paired with the band.
With your tickets linked to your MyDisney account, you'll be able to book Lightning Lane Entrance times together. Use your mobile device to search for available return time slots, select, and when your return window is up, use your bands to scan in at the Lightning Lane Entrance. Tap the "+" on the bottom of the app and select "Book Lightning Lane Entry" from the options that pop up. You'll have the option to select which among your group want to book the return time. Select both you and your wife if you want to ride together.
I hope this helps!
Elizabeth