In Vancouver no one cares, neither does most people in seattle, so I don't know what was happenign at champion shows you saw.
Most kids who "claim" edge don't put x's on their wrists you numbnuts. Not to mention I've never seen anyone get beat up for not being edge EVER. Chances are if you are smoking weed, drinking, or smoking cigarettes in a venue you will get in shit. BECAUSE OF LIABILITY, alot of minors go to hardcore shows and they lose venues if people are doing drugs there.
Fights happen at any show of any kind. I've NEVER gotten in a fight at a hardcore, punk, or metal show before. I see more at hip hop shows