I signed up on-line for the Delta Skymiles Dining program a few years ago, and linked it to an Amercan Express card that I seldom use. I just about forgot about it.
While vacationing in Newport, Rhode Island this past August, I purchased a couple of restaurant.com coupons, on-line, for local restaurants. I ordered them via my laptop and had to pop into the public library, enroute to the restaurant, to print them out. We used one for dinner for 3 at a wonderful very popular Mexican restaurant. The tab came to about $25. net after the $25. restaurant.com coupon deduction. I inadvertently paid with the seldom used American Express credit card. We had enough leftovers for another meal at the timeshare.
I was so surprised to receive an Email a few days later stating that we had earned triple Delta Skymiles for dining at this restaurant. It was posted to my Delta account within two days.