I always enter the BR with PP and have never been denied in ANC, SEA, PDX, or LAX. The lounge that seems to be the most crowded lately is the AMEX lounge in SEA....never been turned away but finding an open seat can be a challenge, especially if you have another person with you that you want to sit by. It doesn't help that some of the seats are "reserved" for the high $$ AMEX card holders. I would take a $25 Starbucks card in exchange for entry anytime ^