I am too old to go clubbing these days. So, when I don't have anything else to do on a Saturday night, I will spend time in a coffee shop. Yes, one belonging to an international coffee chain. They have air-conditioning, wi-fi connection and usually great friendly staff on duty. What more could you ask for.
Besides having something to drink (my usual choice is hot chocolate) and something to bite (a piece of pastry), I usually read books, magazines or newspapers, or surf the internet. The coffee shop is a good place for people watching too.