I haven't been to a movie in a theater in years.....probably at least 10!!! It's always so loud and I cannot sit that long in one position. Then, too, there are the fifty bathroom visits so.....it's just not a fun experience anymore for me!!
As for the cell phone toting teenagers.....I'd have marched right up to the manager or usher and told them that I paid full price for my ticket and I expect them to control the patrons who cannot seem to control themselves. That or ask the unruly ones to leave. If they didn't - I'd have told them I wanted my money back.
I have little patience for people who think they are entitled to control the environment of a public area.