If this is a one time thing, where you don't plan to continue going to the mountain again this season, I would say go with skiing since the learning curve comes a lot quicker. I skiied a lot when I was younger and just tried snowboarding the other weekend. For the first hour of snowboarding, I could hardly stay up for more than a couple feet. By the end of the day, I could get down the beginner slope but was really sore from all the abuse my body took during the course of the day. After I was able to stay on my feet, it's a really cool feeling to snowboard. I can see snowboarding being really fun after you get the basics down. But, like I said, if this is a one time deal, I would recommend skiing.