We will be going to the amazing alpine valley, in the land of White Lake, Michigan. Which is of course the best day ever at the best valley ever. You should totally come because it is amazing and you get to slide down a hill at high speed on two boards all day (hopefully in a controlled fashion).
You should bring your skis and boots (if you have them). If you don't have skis or boots, the mountain will be happy to rent them to you. You should also dress warmly with waterproof layers and insulting layers. Lunch will be provided, so money will not be necessary for your survival for the day.