You might consider that J* have their own refueling procedures (QF dont have a handle on the world operation of A330's)
No, Jetstar don't have their own refueling procedures for the A330. They are on the Qantas System of maintenance!
However Ngineer made no comment about refueling. Ngineer's comments may be more about Jetstar engineers possible lack of experience with the A330 not necessarily their ability.
I did see JQ engineers with a large bucket and sump drain tool in their hands the other day.
Just so everyone knows. QF are the registration holder of 6 of the 7 JQ painted A330's.