It is very theater-dependent in NYC: I live a few blocks from two different theaters, one is quiet and people are respectful, the other is nearly intolerable for anything other than a nonstop action movie because people are talking and texting the whole time. Interestingly, the quiet theater is a few dollars cheaper per ticket.
In fairness, aren't movie ticket prices in NYC near $20? I haven't tried to see a movie there in >5 years, but at the time going to see one in midtown was ~$16.
Yup, pretty much anywhere in the city will be close to that. But that's regular NYC pricing, everything is more expensive there.
Try going to AMC Empire 25 (near Times Square) on a weekend. Lots of people talking, yelling, clapping, texting, etc.
I spend a lot of time at Alamo now.
Well anything near Times Square is a mess, I'm in a quiet part of Brooklyn.