Does anyone have any experience with third parties awarding Amex MR points? I don't believe I've ever earned Amex MR points from any source other than Amex itself, so I'm wondering how fluid their system is to process awards from other companies.

It's interesting that in any situation I can think of, Amex buys points from airlines, hotels, etc. In this case, they're actually selling the points to Fidelity.