1. Everything is the same as a CPL test. Know your fuel and endurance as you will get asked.
2. There are currently two blokes who arent employed by QF who do the testing. They are not too bad, make you feel pretty bad at the end of the flight but be honest when they ask how you think you went and he will give very constructive criticism. They dont intentionally try to be bastards they just sit quietly for most of the flight
3. Goes for at least 3 hours
4. Quite tricky especially the weather related questions. Know about density height and performance stuff.
Very similar to a CPL test but dont need to give a pax briefing. Be professional and confident and you should be fine.
Hope this helps!