i went twice over christmas break, the second time i came home and couldnt walk, literally... i was home alone that week and had to crawl to the kitchen because my feet wouldnt support my weight. When i took of my boots i saw that my sock was soaked in blood, so i removed it and washed my foot to find a 1" circle that was missing skin and was fairly deep, it was where a blister was. my other foot had three blisters on it from ice skating, im thinking i dont want to go again, but its just so much fun!