They are very nice during the Eval. They have multiple scenarios so I dont know what you will get. They sit you down explain everything you will do on the flight, familiarize you with the sim, and give you as much time as you need to brief plates, routes, etc.. I would honestly not worry about it. Out of all the sim evals that I have had to do it was by far the most relaxing. They do not expect perfection they just want to see that you know your IFR procedures as far as following ODP's, clearances, etc.. If you have access to a PCATD I would recommend it. The hardest thing about it is the sensitivity of the thing. It is a fairly short profile, so it is rather fast paced. It is all NACO charts, and you will most likely have 1 full approach and missed rather than vectors to final. Good luck!