If you go to the restaurant in PHL (Left for Gold + 1st and Right for Silver Club) note that you can't get to the restaurant unless you are in 1st or Club. When I was there recently there was a string of people going in but turned away. The sign that lets people know is on the wall "IN" the restaurant.

If it was on the way facing "out" of the restaurant people would be able to see before being refused. If I was you I would get into either one early if possible.