I signed up and was approved for the 75k Citi card - got both personal and biz card. Waiting for them to arrive. Have to spend $4k over the next 6 months. Had an idea. Mint! So a question to all you folk who are dollar coin people: can I purchase dollar coins on the AAdvantage card? Will it be treated as a cash equivalent or cash advance? I've not bought into the dollar coin craze, and so I'm not sure whether it will be a good option to help me make the $4k spend.