Like some of you, I ended up getting the full 20% discount too, and I felt kind of dirty for it.
Glad to hear that it worked for you! Congratulation for it! Also, don't feel bad! You think that Loblaws will really miss that money? haha
They own, on top of getting the ok to buy Shoppers :
Superstore
Atlantic Superstore (Maritimes)
Dominion Stores (Newfoundland)
Real Canadian Superstore (Ontario, Western Canada, and Yukon)
Maxi & Cie (Quebec)
"Great Food"
Loblaws / Loblaw Great Food / Loblaws CityMarket (British Columbia, Southern Ontario and Quebec)
Provigo / Provigo Le Marché (Quebec; some franchised)
T & T Supermarket (British Columbia (Metro Vancouver), Alberta (Calgary, Edmonton) and Ontario (Greater Toronto Area, Ottawa))
Zehrs / Zehrs Great Food (Southwestern Ontario, South Central Ontario, Central Ontario)
Primarily franchised
SaveEasy (Atlantic Canada)
Fortinos (Hamilton, Toronto and suburban Golden Horseshoe)
SuperValu (Western Canada)
Shop Easy Foods (Western Canada)
Lucky Dollar Foods (Western Canada)
Red & White Food Stores (Atlantic Canada)
Valu-mart (Ontario)
Freshmart (Ontario, Nova Scotia)
Your Independent Grocer (Ottawa area; Ontario, British Columbia and Saskatchewan)
Hard discount
Extra Foods (Western Canada, Yukon and Northwest Territories; some franchised)
Maxi / Maxi & Cie (Quebec)
No Frills (National except Quebec, Manitoba, and the Territories; franchised)
Wholesale / Cash and carry
Atlantic Cash & Carry (Atlantic Canada)
Entrepôts Presto (Quebec)
Club Entrepôt (Quebec - formerly Club Entrepôt Provigo)
NG Cash & Carry (Ontario)
Wholesale Club (Ontario, Western Canada and Nova Scotia)
Liquor
Real Canadian Liquorstore (Alberta)