You are going for skiing by day and what are you doing at night? Afterskiing? Sleeping? How boring! Take your snow shoes and go for a walk at the mountains to make some photos at night. You can take images nobody has seen before because nobody is on the slope, except the lonely snowcat drivers.
The only thing you must know is, it is damn cold. And if the wind is blowing over the hill, you better wear the right clothes.