Additional Information
Thanks to all who have replied with humor, concern, and advice.
Answers to FAQ with this experience.
I attempted to use the Goldair Lounge in Athens, Greece. (AA's partner lounge)
I am the primary card holder of the Executive World Elite Mastercard.
I was flying on American Flight 161 - ATH-ORD
I presented my card and boarding pass to the lounge personnel.
Thanks for the spirited responses....I usually post fairly bland topics so I am honored.