Do you really worry about that?

The only things I worry about fitting into are airplane seats and rollercoasters. It never occurred to me to worry about concerts and particularly not movie theaters. In my experience the seats in movie theaters are huge, and the arms can be put up. I do always sit on the end of an aisle, though. Partially my anxiety issues, I feel better if I can make a quick "get away" if I should have an anxiety attack, and partially because I feel self-conscious squeezing by people at my size.