After finishing off Shane T's report below, I became aware of Alliance Airlines operating a scheduled QantasLink service from Brisbane to Gladstone and return for the second time this week.
On Monday 22 August, F-100 VH-FKD operated at UTY2344, touching down at Gladstone Airport from Brisbane late in the evening. It then departed back to Brisbane as UTY2345.
On Wednesday 24 August, F-100 VH-XWP operated the same service - UTY2344/2345.
Perhaps a sign of things to come?