Originally Posted by hourami
... 1) Australia - According to the oneworld validator tool I can do SYD-PER-MEL-AKL-SYD, what is wrong with that. If it needs changing then do I change to SYD-PER-CNB-MEL-AKL-SYD ...
In this the xONEx validator is incorrect; the MEL/PER trans con rule changed in August '05.
These days you can only have 1 PER/BME-SYD/BNE/CNS/MEL segment.
SYD-PER-CNB-MEL-AKL-SYD is not good as you are limited to 4 SWP segments and that's Five! You can purchase more (from USD150) but it's less expensive to do this: Book -SYD,CBR-PER-MEL-AKL-SYD- and a separate fare on a one class SYD-CBR flight from AUD111.
Again, if you are into Tier Points, look closely as ADL-AKL for an additional 80 ...