Heavenly Mountain Resort is notorious for sunny skiing in T-shirts. You can even ski in a swimsuit if you dare. No one will stop you. Partying in the mountains doesn’t get much better than in South Lake Tahoe. The season is open until mid-April. Royal Gorge, Lake Tahoe's cross-country ski resort and the largest Nordic ski area in the country, offers great discounts. Prices usually drop by a third. Spring Loaded, an event loaded with non-stop parties, live entertainment, and competitions keep visitors busy all day.