I thought if they say "Cancel within 24 hours of purchase without penalty. You will receive a full refund if you change your mind." then that's what it means. Like on United.
The fare was Economy Standard: YOW(A)-YVR(A)-SYD(A)-AKL , Economy Standard: AKL(Q)-SYD(T)-YVR(T)-YOW .
I think I've just totally screwed up by not pushing the "Find out more" button. But I just can't believe they said the above and it doesn't apply to everything.