Originally Posted by
tondoleo
Thus, the additional cardholder when traveling by their lonesome cannot access the AC.
Also, it appears that the primary cardholder can
only bring in family members as guests, while American Express Centurion and Platinum allow the cardholder to bring in any two people:
Admirals ClubŪ lounge access with unlimited access for you and your immediate family
It will be interesting to see how AA verifies immediate family status and if AA renews their arrangement with American Express.