Fairmont is offering double airline miles (American Airlines, Air Canada, Cathay Pacific, United & Air China) for stays until April 30, 2013, that are booked using “Everyone’s an Original Winter” offer by January 31, 2013. You can access this offer here.
There are some blackout dates that are property specific. The base number of miles (500) is doubled. The doubling of miles doesn’t apply to the elite bonuses.