Not really. Your more likely to catch it if you go round to your mates house than if you go clubbing. The latter will be more ventilated than the former.
Probably. That's why they need to stop these measures. Everyone who wanted a jab must have had one now, some two and three. Lay out the risks, try to minimise them, let people decide.
On holiday here in Tenerife it's going up to level four soon. Reduced capacity indoors in pubs and outside but you can still go in, some follow the limit strictly, some are a bit more lax. 1 am closing still I think. It's a bit of a nonsense really. Most are masking up to go to the bar and toilet but then are sitting drinking, shouting over the music, hugging and kissing in often poorly ventilated bars, unless sat outside.