I have a couple of priority pass cards that I received with Westpac CC offers. I have since cancelled the credit cards. I guess I might as well try the PPass cards at the Sydney Airport landside restaurant.
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That's what I thought would happen but I used one visit recently, albeit before the CC was closed, and all they did was to check my Priority Pass card. The waitress took my PP card, checked on her computer and then said OK you are good for $36 worth.The PP cards may be declined if the CC is closed.