Your family friend seems to be extraordinarily well informed as to the goings on of all the punters on this flight. They obviously spent the entire flight going around canvassing everyones opinions and their future intentions.
How do you know "Group of business people contacting Garuda to ensure that the keep flying out of Perth as plenty are worried that JetStar will take over from Qantas on PER-DPS run"?
Or that "Garuda already considering putting on direct ADL/DPS flights in school holidays"?
What a crock!