Hello. I just purchased zed medium tickets for me and my husband for a flight from jfk to madrid on Delta. Believe me, I would be more than thrilled if we are able to get a seat in coach but I was just wondering what Delta's policy is with regards to non revs from other airlines sitting in business elite. I know some airlines allow it while others, such as Air France, does not. Any information would be appreciated! THanks so much!