Originally Posted by gooselee

Actually, this is a dream come true. If you have a pile of Amex MR and book DL flights *that are published fares* via the Amex Travel portal, DL treats them as cash tickets and you get full RDM/MQM/MQS/MQD for them.

Good test is if the cash price via Amex is the same as what DL.com is offering. All Amex is really doing is collecting your MR points and then paying DL for the ticket.