I think this is a big deal -- I would be mighty annoyed with no AVOD on a transpacific flight.
In the past I received a US$50 duty free voucher (without asking) because the AVOD was not working in F on a HKG/MNL flight - which is less than 2 hours and therefore not much of an inconvenience.
If it were me in this situation I'd ask for an upgrade voucher.