Here are the results of my testing of AMEX at a Smith's Marketplace store. As I posted earlier, Smith's Marketplace is a Walmart-like sub-brand of the Smith's traditional supermarket brand of Kroger.

The results seem to be mixed. I made a grocery purchase on 3 Feb and when I go to the AMEX online statement and select the line item and then click on "Show Additional Information" here is what I am shown:
So I am assuming from that, that purchases at Smith's Marketplace generally do qualify for the full 6% rebate on the Blue Cash Preferred card. But on 6 Feb, I made a purchase at the pharmacy at Smith's Marketplace. And on that charge, when I look at the Additional Information, all I see is:
So in this case, the additional information does not specify that the purchase was at a grocery store, but on the other hand, doesn't say that it wasn't. So do y'all think my pharmacy purchase would have qualified for the 6%, or not?