Eric_Hill said:
Check out your benefits from the card, it should tell you.
Exactly.
The Soualiga Lounge is part of the Priority Pass network of lounges. Check to see if Priority Pass is a benefit of your card. It is if you still have a grandfathered Diners Club (they no longer accept new individual accounts), Amex Platinum, and some other cards. A Priority Pass membership card is typically issued to the primary cardholder, and does not have free guest privileges. If there is an additional cardholder on the account then some card companies will also arrange to have a Priority Pass card issued to the additional cardholder - ask!
