I remember when you could smoke in cinemas and then there was a while when you could only smoke in half the cinema (left or right, I'm not sure now)
I can remember going to the cinema as a kid and when the film got boring (ie, the "talky bits"), I'd get distracted and stare up at the layers of swirling smoke through the light from the projector.
And double features were the norm. I remember feeling cheated when they stopped.
And there was an usherette who showed you to your seat and had a torch to shine in the face of anyone who dared to speak. The usherette might also have been the person who sold ice cream, ice lollies and cartons of Kia-Ora from her tray during the intermission between the two films. The queues were usually forming up the aisle before the first film even finished!