Celebrate Stratton’s 50th birthday Friday, Dec. 23, with what’s billed as a “bash for all ages.” It’s all part of a season-long celebration. Here’s the best part: Your early Christmas present comes in the form of a lift ticket for just $50. But, you must book it online http://www.stratton.com/reservations/mg_429/Special_Mountain_Ticket_Offers.search?SD=20111223 in advance. There will be plenty to see and do. The traditional Stratton Ski School demo is at 9 a.m. on Suntanner. Emo Henrich’s film, ‘Life AT Its Peak’ screens at 4 p.m. in the Base Lodge, West. Cut the birthday cake and toast another 50 years at 4 p.m. at Grizzly’s. Hunt for the Golden Watermelon all day. Consume gallons of retro fondue at lunch at Grizzly’s. Sign the birthday card. Happy Birthday, Stratton.