A little more detail:

- JQ rerouted some pax on Air Canada. The rest were on JQ service.
- JQ chartered a QF 767 for MEL-DPS to fill in (as they have no spare planes)
- 2 of their 4 A330s went unserviceable.
- the initial delay was SYD-HNL which never left the ground due to an avionics problem that wasn't fixed before the crew ran out of hours. Thus no plane available at HNL for the Thursday morning departure. But JQ would have known this 8+ hours earlier, giving ample time to make other plans. They chose to put all pax into hotels and on the Friday JQ service.
- the plane for Friday had a defective fuel gauge, canceling the Friday flight (actually it operated 15 hours late). Most pax eventually got out on the delayed JQ flight (15 hour delay is no fun, at any airport). 40 pax were re-routed onto AC on Friday.
- JQ is stating that these problems cost over AUD 1 million in extra cost for JQ (mostly for the QF plane charter and maintenance costs).

Clearly JQ is paying a heavy price for having no spare planes. Having back to back failures was bad luck, but their contingency plans seemed poor. And their competition (AC) appears to be running full if they could only take 40 pax.