Best time to be at Watergate? Sunday after 8 o'clock. Sun is up after hour (aka after aua) begins. Usually a lot of tourists are leaving and you'll see more familiar local faces. If your leaving to early you're missing the whole fun! After watergate? I don't know, that's the beauty of Berlin! Griessmühle, Berghain, Kater, Renate, About Blank.... So many options... Keep the spirit alive!