Hi, According to the Amex Platinum T&Cs for club access, "Complimentary access is specifically for the airport club that corresponds to the airline operating the flight (access pertains to the aircraft, not the flight number) except for US Airways Clubs, or with respect to American Airlines marketed code share flights with an American Airlines flight number which are also eligible for complimentary access to the lounge." I will be flying Air Berlin 7451 to Dusseldorf out of JFK Terminal 8, which is codeshared as AA 8068. I bought the ticket as an Air Berlin flight number (I didn't buy as an AA flight). Don't codeshares usually show up with the operating airline's flight number on the boarding pass and not the marketing airline's number? My question is whether I will have access to the JFK Admirals Club since the flight is an "American Airlines marketed code share flight." Is there any way for them to know whether you are flying on a ticket purchased as a codeshare with AA? Does anyone have any experience with this scenario?