Yes it hurts, I went up to Wallan for a friends BDay and they will give your a camo outfit, helmet and goggles and we all bought gloves and a cup to protect your penis and balls
Girls are given a chest protector.
I suggest you wear shitty clothes as things are going to get messy but since your indoor you won't have to deal with mud, grass, trees and jungle wild life.
Bring your own protection too as it will help and you all should be fine.