Berghain wasn't there when I lived in Berlin. The club scene is Berlin is phenomenal, what ever you want to do, there is a club for you which is pumping any night of the week, till all hours. The video are right about the fun police from a legal perspective, I'm not convinced from a cultural perspective. It is really poor form in Berlin to get drunk unless its a private party, or an event or festival where being drunk is acceptable. Stay out all night, but don't get off your face if you don't want to insult everyone. I'm not sure the expectation for men to piss sitting down is particularly free. Whilst I didn't have a restrictive rental agreement I was stunned at the options which exist in the pro forma rental agreement, laundry schedules, prohibitions on hanging out your laundry on a sunday, ect. Never J-Walk infront of a German mother and child, the ear bashing the mum will give you is phenomenal. Berlin is my favourite city to visit in the world, soooo much to do (indoors, the weather is to shit for many outdoor options), so many events, so much culture and most of it on the bleeding edge. But it exists within a culture which paradoxically demands conformity in so many contexts. Actually I take that back. There is nothing pardoxical about Berlins cultural production and "freedom", it is 'alles in ordnung". There is a particular time and place to let loose, do it there, but don't dare do it anywhere else, or at a different time.