Retailer:
Walmart

 

Code : MERRY60
First 3 order of $75 or more get $20 off. Till Dec. 15.
It works on existing account, no need to create new.

There are reports you have to create new account.
For some other provinces it is WALMART10 that is working only. $10 off yoir order of $50 or more.

Combine with Walmart Black Friday deals item works like the philipps groomer. As long as you have eligible grocery in your cart.
 
I have tried to redeem it under an existing account.
Happy shopping!!