A FlyerTalk Posting Legend
Join Date: Feb 2001
Location: Berkeley, CA USA
Programs: Piggly Wiggly "Shop the Pig!" Preferred Shopper
Posts: 57,094
I can’t answer the question, but I’ll be very surprised if anyone reports getting into any lounge based on their Plat card account, but without the Plat card in hand. With one exception: Centurion Lounges, which are staffed by Amex employees who have access to Amex account info.