I realize there are two extremes to this argument. While I may come across as taking the Altar Boy side of the argument, I usually handle myself in the way you just suggested. Believe it or not, I HAD A BEER at the game yesterday. Somehow, I was able to not piss anybody off enough to have them want to fight me. I think you and I are on the same page for the most part. You are saying you have fun, but at the same time you are also saying that you are considerate to those around you. I am criticizing the people who think they are entitled to puke on themselves and block everyone's view.
Usually if someone pisses us off enough, it's easiest to just get the usher. Especially since we've had the same usher in our section for the last year or two, so he knows us and he knows when the amateurs are getting out of line.
I have been to several home playoff games.