MEL-LAX J->F, requested 3 days prior, no success.
FRA-SIN J->F, requested 3 weeks prior, waitlisted, cleared 7 days out.
SIN-MEL J->F, requested 3 weeks prior, waitlistes, no success.
MEL-BNE Y->J, on-departure QC request, successful.
SYD-LAX B->J, requested 3 days prior, immediate success (selected flight knowing availability)
LAX-BNE B->, requested 2.5 weeks prior, immediate success (selected flight knowing availability)

QF Platinum FF.