I went back to Shaw's today to try again & see if the register rewards really were printing on the prices before sale. And they were! I must have done something wrong in my transactions yesterday.
I got 13 boxes of cereal (including 5 boxes of Cascadian Farms organic granola), 1 box off muffin mix & 1 box of granola bars. I had a coupon for every product, and I did it in 2 transactions. I paid $24 and change out of pocket, and received $30 in register rewards! I didn't try to roll the RR; they cannot be used on Procter & Gamble products, anyway, though none of the food items are P&G. I sort of felt as if I was already saving so much money that the least I could do is pay cash :)
So get thee to a Shaw's now!