My interview was also during a road show.
I experienced the same scenario as Argpilot757 except number 3 (the group session).
Concerning number 2, the book "Ace The Pilot Technical Interview" was recommended as prep. I found it beneficial as some of the topics addressed in the test were covered last in the early days of pilot training.
My interview had no technical questions. Instead, I was asked about myself, my family, what do I expect from Qatar Airways, etc. I was then presented a list of sim eval dates and told to pick one. If you can't make any of the published list they will notify you when a later session comes available.
Good luck!!
