Ms A's Guide To Theatre Etiquette

I see that Dr Peter West, retired university lecturer and social commentator, is in today's Age fulminating on the bad manners of Young People at the Opera and the Consequent Decline and Fall of Civilisation. Apparently nobody obeys Rules any more. It's all the fault of entitled young people with their newfangled phones, according to Dr West. Or possibly people on drugs. Anyway, I was inspired,