At the Kansas game, as I got to the South gate, I could not get my tickets to open from my WALLET (Google Pay). It gave me a message that I had no internet. I have limited data so I leave my data off unless I need it. I had to turn on my Data, still had trouble, but eventually got my tickets to open. So, maybe I don't understand Google Pay but to say you don't need Internet in order to open your tickets, that was not my experience.
Seems to me that if any venue is going to use electronic tickets, then they need to provide free wi-fi to the entire stadium or coliseum area so that tickets can be accessed. We just went to a concert last Thursday and also last Tuesday, both times we had bad experiences trying to get our tickets to open. At one venue, we had to leave the gate, go to a place where we could get internet, open our tickets, then go back to the gate again. Maybe there is a way to open tickets without internet, but it is not fool-proof by any stretch of the imagination.