Noumea isn't a great choice for a planned refuel. Very restricted parking space and tight runway turning nodes. In an unplanned stop for fuel, the better option is Brisbane. If the stop has been planned, then Auckland becomes possible.
Time would be very tight, and anything more than about 40-60 minutes on the ground would probably run the crew out of duty time limits. For that reason, any time a diversion looks likely, the company will try to position a crew in either Auckland or Brisbane to take over the aircraft. Sometimes that also happens for the LA flights.
