Here are the T&Cs on the Air Miles promo.
Offer valid December 5–24, 2013 on qualifying redemptions made in a single transaction at participating AIR MILES Cash Sponsors in Quebec, New Brunswick, Nova Scotia, PEI and Newfoundland & Labrador, and December 6–24, 2013 in all other provinces. One transaction per day per AIR MILES® Collector Number per Sponsor. See in-store for details. Redeem AIR MILES reward miles in the Cash balance of your AIR MILES® Collector Account in increments of 95 reward miles for $10 off your purchases at participating AIR MILES Sponsor locations to a maximum of $750 per day. Visit airmiles.ca/cash to learn more.