Well no warmup act is listed yet, and doubt one will be added. Doors at 7:30 and when Kraftwerk is scheduled to play will be listed the day of the show. As far as sitting, one can typically sit upstairs until the crowd fills up. I would guess, seeing as Kraftwerk draws an older crowd, arriving hours before doors open wont be required to be able to sit. Being able to sit during the show will be doubtful... And I will make no guesses as when to arrive to avoid lines, etc.
