Well done on getting through
I'm having my sim check on Thursday so I am in the same situation.
Basically it is a Cessna based IFR sim and they are going to check our basic flying. Not sure what to expect, working using RANT at the minute
Expect some maths questions etc to be asked of us during the session.
I would have preferd a 737 check over this Cessna set up, I would know what to prepare for then