A lot of my pet peeves are based around bands who are nothing more than lazy, wannabe rockstars. Their egos and lack of hard work kill it for me.
Also, I think everyone should clarify their "scene" because a lot of wedding band rules don't apply to jam bands which don't apply to metal band. I don't dress up, I actually prefer too look like crap.
Obviously, I'm in a metal band
1. Bands that think they're hot **** and are only seen during their set, never before or after. With big acts it's cool to see them once their set starts, it's like "OMG there they are!" Unless there's a backstage, mingle. Chances are you'll convince a few people to stick around for your set. You're not big enough to have people wait for you.
2. Excessive wanking/talking in between songs. We make it a point to play 4-5 songs into the set before we start talking.
3. I like doing that "How are you doing?" "I CAN'T HEAR YOU HOW THE **** ARE YOU DOING?!?" thing ONLY if it gets a good response the first time around. Otherwise, I'm just checking

When I see other guys do it, it's almost a cry for help.
4. Excessive load up times. I've seen bands set up one guy after the other, BS with each other on stage without touching anything, then proceed to take about 10 minutes to set up their stupid banner. You should be done and playing within 10 minutes.
This especially goes for the singer. He's a drum tech until it's set time damnit.
Our setup time after the other band is 5 minutes tops and we have ALOT of equipment...which includes, yes, a banner. Halfway through the other band's set we're setting up cymbal stands, floor tom legs, and tuning our instruments out back. We all set up simultaneously and once one of us is done setting up, ask the other guys in the band if they need help.
5. Being boring. I hate seeing a local thrash band who's tabs would read E-00000000000000000000000000002 and just....sit there and look at their fretboard. If I was playing something so simple I'd be all over the place.
6. NOT giving the other bands props. I LOVE it when another band goes "How about Killjoy?" during their set and THEIR fans go ape****. It supports the scene.
The funny thing is, all I had to do is think of one band from the area. Sadly, those chumps play NYC all the time opening for international acts :scowl: