From their website:

"To show our appreciation to all our ski guests over the years and to celebrate our 37th anniversary of the ski area, everyone will receive a free lift ticket to ski on Thursday, Dec. 11 from noon to 4:30 p.m.. Additionally, guests can stay at the resort for just $37 per night Dec. 11-14, 2008. For further information - call (800) 622-4121"

I hope they have more than "B" lift open. Otherwise their show of appeciation will be (ahem) not much of a show.