I always stand when I play at church, but in my last band we all sat because two members couldn't stand that long. My current band has seven members and most of us sit. There are times when I prefer to stand, but long gigs remind me of my teen years setting bowling pins three nights a week; lots of bending and lifting that my back makes sure I can't forget. I have one of those folding stools mentioned earlier; it works fine until my butt gets numb. When that happens I stand for a while.
Thump on,
One_Dude
Thump on,
One_Dude