I thought that DL had jumpseaters accounted for in the BOW? I figure I will throw my two cents in as I have been going to SYD usually twice a year for the past 15 years. The general rule of thumb I have seen is if there is open business class seats showing a day or so prior expect a good heap of non revs to list up 24 hours or so prior. It is very frustrating to watch all the non revs come out of the wood work.