It isn't is the answer. Google/Apple Pay are not the app that would be used. Google wallet is merely a storage app for documents, usually things like tickets. As others have said, it would also be an email so you just open the document in that and scan code. That said, for younger kids with...
Think once you've named a group that's it for the season. You can't chop and change. Also, seems from the update from the club today, you will need to show photo id for the name on the ticket so your group of nine won't be able to pick and chose!