Sorry if I've missed this info - I confess that I haven't read every post in the thread ...

I set up a Fidelity account and initially enrolled in the AA promo and deposited some money, then enrolled in Delta promo. I've got my first 15K miles in both, and am in the process of moving more money to get more miles.

Am I correct in thinking that there is no point in signing up for the Amex Rewards promo? In other words, there's no way to triple-dip, right?

thanks