Oh, right, thanks. Sorry about that, I'd mixed up the dates. November we flew LAX-SYD so we left from T4 and hence used the FL. It was July that we flew LAX-BNE and left from TBIT, and that's when the QF check-in agent insisted we couldn't use the F lounge. (Of course, if I'd been thinking, I'd have gone there anyway, and seen if they'd let us in.)