Now thats the sort of thinking I like - give that bloke an extra Tim-Tam at morning tea.
Or just get into a mates computer in brazil and book it - or VPN - or....
Just a heads up mate, nearly all ticketing is completely automated.
Given the contract-within-a-contract nature of airline tickets, Qantas are well within their rights to charge you the fuel surcharge between now and the date of departure.
Ideally they won't as it's bad PR, but they can.
Great job on the ticketing from brazil though! Very inventive. Abuse while you can :D