Mickey here.
I pretty much only wear skirts or dresses (long whiny story). I don't wear anything that can't go in the washer/dryer or will stain. I usually don't wear anything longer than knee length. I have never been a fan of crowd-surfing since at metal shows that's how douchebags shifted the girls out of their way and to the back. But I am a fan of thickish leggings or big socks when it's cold out. I have a couple of "cargo" skirts that have assloads of pockets that button. Also, don't wear anything that it's gonna break your heart if it gets a cigarette burn in it. I know you can't smoke inside anymore, but, especially at the Galway, you still have run the smoker gauntlet outside to get in.
I do have one ankle length denim skirt I'll wear sometimes if it's really cold out, but it isn't particularly flowy around my ankles and I don't have to worry about anyone stepping on it.
If you are worried about flashing the crowd, bike shorts under your skirts are great. Or thick tights.
