Has anyone attempted to do this? AA was my selection from last year and I have not selected anything this year so it defaults to AA. I would like to get 2 $100 AA gc's again this year right now, but now that there is a 50% rebate on points for selected airline I would prefer to have that for Delta... Since Amex states you can change your airline 1x per year in January (which I have not done) I wonder if it would be possible to buy the AA cards, get the statement credits and then still change to Delta for rest of year for 50% rebate benefit???