In this situation-
Qantas has done everything reasonable and responsible;
1. Returned an aircraft that developed a fault;
2. Explained the PROBABLE cause and possible fix;
3. Provided you with a $20 meal voucher...
Planes are machines...they develop faults...
Can't believe you are upset about not being able to use a FOOD voucher on booze...just as well;
That way the ground staff do not have to refuse boarding to a drunk; or
the Cabin Crew don''t have to deal with an obnoxious borderline drunk...
Are you so sure Air NZ, Jetstar, Pacific Blue or Emirates would have done better?
p.s. next time
www.aa.org.nz maybe a better website to consult.