Flying with 2 friends in August from DFW-HEL on Finnair metal but ticketed on AA. Two of us have J tix and one has Y. Do J pax have access to DFW Terminal D Flagship lounge? Could I buy access for the Y pax? I think I saw somewhere it is $150. Better if lounge passes count as a fee for the Amex Plat since I selected AA. Or would it be better to visit The Club with Priority Pass?