I just looked at a few scenes on YouTube from the movie.
Tiboonda is, as I have said before, Horse Lake. The triangle you can see faint remains of in the overview shots dates from the 1950s water trains.
The clock is a bit of artistic licence, although the platform may be the real thing. There was a similar platform at Warattah which appeared on the back pages of a number of magazines years ago advertising J&B Scotch (or maybe Benson & Hedges cigarettes).
The FO is in a train that pulls up to the platform so it was out there. It would not have been used on the Horror - No 26 the weekly overnight train from BH to civilisation.
I can't recognise the bar the beer swilling scene was shot in. I always had the idea that it was the Palace Hotel which also starred in Priscilla but I am not sure.
When the schoolteacher goes back to Tiboonda despite the fact that they are obviously waiting at Sulphide St, the train is headed by a 49 class passing a 3 aspect colour light signal.
When I was 22 I was sent out to Roto as stationmaster. The Education Department obviously recruited a lot of delicate little flowers.