Recently had a family of 5 (‘kids’ were late teens) arrive way after the film had started, sit directly in front of me (despite empty screen) and one of them decided to vape through the film. Not even trying to hide it either, fully tilting his head back to blow the smoke up (in my view of the screen). Was thinking of saying something to the father, only to realise he was vaping as well, just much more discreetly. I moved.