Easiest and most accurate way to tell, check your last statement. Next to each line item it should tell you the category it was placed in. Each store may be different, but your statement is going to be the most accurate picture of the places YOU shop.
I guess that gets back to the question I asked earlier; if Walmart Supercenters qualify as a "grocery store", does that mean that every single thing purchased there qualifies for the 2%, including DVDs, lawnmowers, chainsaws, etc? Or is it only grocery items that qualify?
If it is the latter, then how would my credit card bill differentiate between the two? If we go grocery shopping tommorrow night and spend $350, it's just going to show up as a $350 charge to Walmart on my credit card bill. But it isn't going to differentiate between different items purchased. I mean, of that $350, $100 of it might be non-grocery items. So I may get 2% points on the $250 of grocery, and only 1% points on the $100 of non grocery items. But I don't think the credit card statement is going to show two different entries to reflect the two categories of rewards points, is it? Isn't it just going to show a $350 transaction at Walmart on 2/29/2012?
I can look at the total amount of the monthly statement, and see what percentage of that amount my monthly accumulated points comprises, but that won't necessarily tell me whether or not my Walmart transactions qualified for the 2%, depending on how much my total bill is and how many transactions there are. If my total credit card bill for the month is $1800, and I have 22 points, then I know that
something on my bill is getting me 2% (because 1% accross the board would be 18 points), but is it going to specifically break it down on my bill which transactions or which portions of transactions got me 2% and which items got me 1%? Or would I just have to go through my statement and add up all the gas transactions, all the restaraunt transactions, Disney transactions and Walmart transactions and see if those items add up to the right amount to account for the extra points?