It's pretty rare that a crowd can ruin a show for me. Unless I am personally offended by someone, ie. slimy come-ons that aren't funny or violence than the crowd can't wreck a show. I can just ignore them and concentrate on the tunes. However, an awesome crowd at a bad show can make it all worthwhile. If the band completely lacks talent but the crowd is super friendly and just wants to dance and have a good time with everyone present than it doesn't really matter if the band can only play two chords and is tone deaf, it'll still be a good night. Personally, I like outdoor shows the best. Being able to appreciate music and nature simultaneously is heaven. I also like having a lot of space to dance, I hate having people in my bubble. Mind you, I think everything is better outside, the three f's of human instinct especially!