I think IIRC that you can buy a pass to the arrivals lounge. It's an Amenity benefit for $50 (?), but I believe others reported that anyone can buy this, not just Amenity members. AA certainly allows this (for $35?). Also, you may need to pay the fee at the ticket counter and then take a pass to the lounge (at least that's how it works with AA). Someone who has done this will hopefully chime in here and help you.