silverhawk,
For the Netjets sim ride you're not given any thing untill the day of your ride. The guys tell you what you'll be doing and off you go. If your hand flying and IR skills are fine then the flying isn't too difficult.
From what I can gather, they want to see if your CRM, interpersonal skills are good and you have some trainability. Also they want to see common sense applied too and you keep every one in the loop as to what's going on.
Personally, I found it one of the most relaxed sim checks I have ever done. Dare I say I even enjoyed it.
(Gatwick sim)