It is fun but you don’t appreciate how fun it is until they've told you your successful! I remember during mine for most of the time I was aware he would be looking at my performance, only briefly did I forget the other person next to me and really enjoy it! You are given a briefing beforehand which lasts nearly as long as the sim it’s self. I believe what they expect of you is related to how much flying experience you have. Everything you need to know is included in that and they make it clear if you have any questions at any time then just speak up. I have found that throughout my selection process everyone at CTC has been fantastic at relaxing you and getting the best out of you. I know it’s been said a million and one times but do relax and just do your best. As long as you know that you've given your all there is nothing else you can do.