Anyone know whether "additional cardholders" on AMEX Platinum Charge Card can bring in guests to the Centurion lounges?
I understand the primary cardholder can bring in 2 guests?
I have a Qantas Ultimate and an AMEX essentials.
I am trying to upgrade to an AMEX platinum.
Is there anything I can do on the Essentials card to get a bonus points upgrade offer to Platinum?