LOL! Sorry, any tournament I've been to in the South, you can wear anything you damn well please, apparently. I see guys {and girls} in ragged cut-offs, flip-flops, caps forward, backward, and sideways, seldom any kind of shirt besides a t-shirt, jeans, etc. And this included "state tournaments", regional, whatever. In the place I played in in NY, this would not have been allowed for state tournament, I think Joss Tour tournaments, etc.
I've always tried to dress decent, but when the director and the venue don't care......