And potentially gotten you lynched for interfering with everyone else’s enjoyment of the performance.
No Flash Photography unless you have consent of everyone present. Even with a xenon flash which doesn’t mess up everyone else’s vision as badly, it’s gratuitously annoying. And in many situations, your pocket camera’s flash isn’t going to produce enough light to make much difference anyway.
(My favorite electronic flash unit is an ancient one which, at full power, is rated about 8000 BCPS. It can just about be used for nighttime architectural photography.)
