I was once booked on JQ OOL-MEL and the flight was cancelled. I was livid because I could just have stayed with my Mum and had already returned the hire car before I found this out (they claimed to have texted me, but I didn't get it). I said I was not bussing to BNE, they can stuff that, and they told me I had been booked on a VA flight 5 hours hence! Yes, they flew me home on VA, who actually were really lovely to me, because I was so upset. The plane was not very full and I had a whole row to myself (though surely that was chance). Meanwhile JQ gave me a $10 voucher to use in the airport during my 5 hour wait. Pretty sure that was the last time I flew them.