There will be no fighting. I have been to about 3 of these things and people always get along, even the most vicious of enemies. Once the crowd arrives it is lot of backslapping and kidding around. Fun to even guess who is who. Nobody wants to make an ass of themselves and they realize how silly they sound on a message board when talking of personal threats. I'd lay huge odds there won't be one altercation. Not to mention tons and tons of security around.
My personal tale of the tape available upon request.