Originally Posted by
Often1
My advice is contrary to OP's. The key is an e-ticket. Nothing short of an e-ticket gets you onboard a flight. BP's can be reprinted, but e-tickets need to be issued. The easiest thing here would have been to ask an MCO agent to issue paper tickets. DL hates this and it should not be necessary in 2017, but that is the easiest solution.
While I have been issued a paper ticket during IRROPS before, what exactly is the benefit here of a paper ticket instead of getting the e-ticket reissued?