Bars are notable for staying open late, but I’m not really familiar with alternatives that might operate similarly. I think many cafés (at least around my area) tend to close a few hours earlier by comparison, which would be my go-to for an alternative otherwise, so what other options are there?
When I was younger, there were some places with a club atmosphere that didn’t serve. For whatever reason, no booze. They became hang out spots for teens and the like. There was also a strong coffee shop culture, and one or two that stayed open just as late as bars. But in a post-covid world, many of those places shut down and new places like that close early.