As “Spaced” has already been mentioned, “Wasted” hits the same spot. Sadly it’s only six episodes.
Chaos Communication Congress in Germany.
I’ve been quite a few times and it’s always a blast. You can have the nichest of interests, if it is in any way tech adjacent you’ll find a few like minded people.
You can listen to great talks or find a place in the “Hack Center” and tinker away with a few thousand people.
In most places this is included in the accommodation’s bill and isn’t a lot of money.
Some cities have quite huge fees of you want to drive an old car with a dirty engine into the center. Some will even fine you for it.
I suggest getting a ticket for public transportation. There are tickets available for a day, week or month, covering cities, countries or even the whole of Europe.