But I rarely fight my way toward the stage.
I think it depends on how close you want to be to the stage, how drunk and nasty the crowd is, etc. But my taste in music isn't that far in the grunge, etc., genre and I'm usually far from "the action". Usually you'll have some indication of a problem before it develops into something serious.
Recent shows I've seen:
The Who
Neil Young
The Cure
The North(?) Mississippi All-Stars
Bare Naked Ladies
Blue Mountain
Son Volt
Things of that sort. Venues include the 930 Club in DC, Nissan Pavilion, Wolf Trap, IOTA in Arlington, The Birchmere in Alexandria, etc.
I don't think you'll have a problem with trouble. You'll have more annoyances with frat boys talking the whole time during the show, giants blocking your view, people crowding in if you try to have some space to move, etc. :-(
Enjoy!
Cheers,
Scott.