Miguel
I went for a First Officer interview with Qatar and I used latestpilotjobs website for studying for my interview. I have to say it was worth the money.
1- I saw around 50% of the ATPL questions (exact same wording)
2- HR interview was the same as they described
3- Simulator was very detailed as well
I think Qatar changes their ATPL questions from day to day. The reason I'm saying this is one of my friends that attended interview few days after me got different questions from what I got.
Now I have to convince my wife to move to sandpit
Good luck