You just have to do the sim assesment. You will be in Doha for only 2 days.
If you really want the job I would advise you to rent a couple of hours in the 320 (pretty much same handling and same cockpit as the 330) just to give you an idea of what it is to fly the sidestick and get afeel of the autotrim function.
As far as procedures, the instructors are pretty good in giving you a good briefing and guiding you during the assesment.
I did mine on the 777 and had never flown it before
Good luck