As per above, it’s a very relaxed day. The assessment team are all genuinely nice and friendly guys and do what they can to put you at ease from the start.
The sim there is an Alsim ALX generic TP setup, but there’s no requirement on the day to use the Prop or Fuel levers, only the torque.
I didn't find the sim that bad tbh... I guess it depends what you’re used to, but would certainly recommend getting a few hours in it for some prep beforehand.
Good luck.