[Cupertino95014]

This is actually a great idea. No need for anyone to be the designated driver, and you can go to places not within walking distance.

A really enterprising transit agency (an oxymoron there) would create The Party Bus and promote the hell out of it. Rip out all the seats and put in couches. Special lighting. Use your imagination.

[MandieD]

Nürnberg’s city transit service has a fleet of historic (“Oldtimer”) streetcars and busses that can be rented for events - here are the streetcars: https://event.vag.de/event-flotte/oldtimer-strassenbahnflott...

Edited to add: you can, of course, also rent the modern busses and streetcars. And even subway cars!

[Symbiote]

Buses like this drive around Copenhagen.

It's pretty much only young people that hire them.

https://copenhagenpartybus.dk/

[dzhiurgis]

What? Party buses are all over the place.