Cloud Nine Alpine Bistro is the most amazing on-mountain ski party you could ever hope to experience. This ski bar and restaurant, located in an old ski patrol shack in the middle of the Highlands Mountain run, is open during the winter months and accessible only via skiing or snowboarding (there is a snow cat that can take you down the mountain, but you have to wait about 45 minutes after each seating). Cloud Nine has two lunch seatings—one at 12:00 and one at 2:00—and you absolutely have to make a reservation in advance (at least 30 days). After the lunch service come the champagne showers and ski boot dance party. Put your order in for a $125 bottle of Veuve Clicquot. And just remember to bring a change of clothes—you’re destined to get soaked.