In the AA TBIT lounge thread it has been reported numerous times that the Qantas F lounge dragons are giving pax on AA dom. flights a hard time denying access where access should have been provided according to OW lounge rules. I can't recall the exact details, but pls check the information in the AA thread whether or not you might face a "No" when trying to enter the lounge. Anyway, the AA Flagship lounge (or the Qantas business lounge) are not bad at all. Earlier this year I enjoyed the tranquility of the AA Flagship lounge whilst the Qantas lounge was like a zoo with several Qantas departing flights around midnight.