I had an interesting experience taking my son to see the recent-ish Mario movie at the theatre that made me realize that the theatre business really is changing.
It was the weekend. Sunday I think. Middle of the day. I hadn't been to this particular theatre before. I bought the tickets online, picked our seats, and then we drove to the theatre. It was in a strip mall on the outer fringes of town, I think they had around 12 screens. So not tiny but not huge.
Anyway, we walk in and there is no check-in or ticket-buying counter. There were some signs with QR codes saying you could buy your tickets online, which I had already done. In fact, there really weren't many people around at all, either customers or employees. The first (and mostly only) thing you see is an elaborate concession stand with every kind of (expensive) snack you could want. I bought us a medium popcorn to share and then we wandered over to the hallway where the screens were. There was no desk or person anywhere to verify that we bought our tickets before entering the theater. I flagged down a cleaning person to ask who we showed our tickets to. He just asked which movie we were there to watch and then pointed us to the right screen.
So I don't know if this was an unusual circumstance and they just weren't checking tickets that day, or if this is just how they run this particular theater. After the movie, on the drive home, my son asks out of the blue, "Wait, did we even really have to buy the tickets online if they don't make anyone check them?" We had a good discussion about that.