Qantas is cancelling a swathe of flights tomorrow (September 20) and delaying others as a result of industrial action. The advice we wrote back in 2008 on how to cope with flight disruptions remains valid: make sure your mobile is registered with the airline, take only hand luggage, and lurk near the service desk.
The one additional suggestion we'd make is to cancel or shift your flight if at all possible. Qantas is waiving change fees for passengers who make alterations, and the situation is bound to be chaotic no matter what happens. Remember to stay calm and share, particularly when it comes to power outlets.