Used 3 (2 different stores) in Fort Worth. First store I visited wouldn't let me use it on gift cards, but I needed a paper shredder--$50 regardless--and bought some other things to make $100. Second store let me use it towards gift cards, but were out of Visa cards so I went with Amazon gift cards. Used two coupons (two transactions) for 4x$25 each as they were out of the $50's.
Manager had to override at both stores. I tried to tell them when I got to the register that they should put the coupon in first, but they said it wouldn't matter and just did it at the end. Not sure if this is why the first store had to do an override?