When I was there with the family 2 years ago we got to see a kid (17 or so) do the luge wearing only a pair of tighty whites. it was less than 10 degrees at the top, but that wouldn't seem to be the big problem. He had lost a bet. The guide said it happens all the time.
As for the restaurants, we didn't really have a bad meal. Between Yelp, Tripadvisor and Urbanspoon it's a great town for food.
Sounds like a bet I would've taken back in college...haha!