I was there, too, and there was definitely a good vibe in the audience, loads of people singing along but no loud-mouthed drunks, at least not around us. Great that Wilco have ventured as far as Vienna on their European tour, and can only hope they continue eastward next time around: we came over from Hungary for the occasion, and I know there were quite a few who came all the way from Serbia and Croatia. Maybe that's what added to the special atmosphere? :)