Travel

Even if you can't add it to wallet, it does work at the gate.

Another thing is with some airlines and perhaps all of them, family members can all board together regardless of which boarding group they are in. I have a high status with American Airlines so I always board in groups 1 or 2. My wife does not and is generally in group 6, but she can board with me sooner than she could otherwise. I keep both tickets in my wallet and just swipe through both at the gate. It's very common to see entire families do this.