Final answer:
Priority Pass is a service offered to American Express Platinum Card Members that allows them to access airport lounges worldwide. Basic Card Members can enroll in Priority Pass using the app, while additional Platinum Members need to call a designated number. The mobile app does not display the Priority Pass membership number, but the Lounge Details screen shows the Priority Pass status.
Step-by-step explanation:
Priority Pass is a service offered to American Express Platinum Card Members, allowing them to access airport lounges around the world.
To enroll in Priority Pass, Basic Card Members can use the mobile app, while additional Platinum Members need to call the designated number on the back of their Card.
The Priority Pass membership number is not displayed in the mobile app, but Card Members can check their Priority Pass status (Enrolled / Pending) on the Lounge Details screen of the app