I used 18 certificates in 2012, and just used 9 of them this past October.

The certificates are only good for the Banff Springs and Jasper Park Lodge. You can buy these certificates at any Costco in Alberta. You receive $100, for the price of $79.99.

The packaging is different than the T&Cs inside. The packaging states that only 3 can be used per stay. The T&Cs inside state that you can use up to 3 certificates per night. I've used them with packages, and any advertised rate. They are a true savings. Plus you receive 10% off food and beverage coupon and 10% off spa coupon (unfortunately you are not able to combine the FPC discount with the spa coupon).

I'll be using the certificates once again next month. The certificates are generally good between September 15, 2013, and April 15, 2013 IIRC.