This seems like a simple question, but I can't find the answer on AMEX's site, nor has contacting customer service produced an answer ... so I thought I'd ask the REAL experts. I am aware that the AMEX Plat grants access to AA lounges with same-day AA ticketing. My question is whether this benefit only applies to Admiral's Club lounges or other OneWorld lounges as well? Example: Madrid has no Admiral's Club lounge, but it DOES have an Iberia lounge. If I'm same-day ticketed on AA, will the AMEX Plat grant me access to that lounge?