The airshow is on Saturday on the foreshore called "The Strand". The sunday is the open day at RAAF Townsville and I doubt there will be any flying at all.
Other opps to see the F-111 are the Indy Gold coast whatever it is. River Fire. Whenever that is and Pearce defence force show in 2010. There will then be a "private" last horrah at Amberley around Dec 2010.