Did anyone else have this issue?

I literally Just got back from the cas concert in NY. It was my first concert so I had no idea what to expect the experience sadly was both pleasant and not. I’m going to start with everything that was truly amazing the venue even all the way in the back (where I was) I could still see the band perfectly they played just as a amazing as you’d expect. They played apocalypse towards the end as you’d expect BUT ADDED OPERA HOUSE AS AN EXTRA I WAS SO HAPPY!!! I was walking to leave and they started playing it (felt like a fake fan fr 😭) Now on to the cons The singer did have to stop mid song to get someone from the crowd out, I believe the guy in the audience was causing issues with other people (im unsure as I was in the back) he did however replay the song beautifully I might add. Also the wait time was wild to me as I said it’s my first concert and I’m unsure of what’s normal but the band was supposed to start at 7:30 but ended up starting near 9:00 I’m unsure if this is standard because doors opened at 6:30. By that time it did start to get pretty cold mind you it was an outdoor event. So I was freezing I found it pretty worth it because I’ve been meaning to see them for a long while it’s just I was wondering if there was a reason they started so late? They could have at least announced it right? Or is this just something that’s normal at concerts?