Hey Congrats EAF, see you in the sky! - Or at Cranebank, subject to your start date!
UpInTheSky - Interview is exactly how EAF says.
Just be yourself, be aware of whats going on around you.
Your two to one interview is mainly about your background and experiences you have encountered. So providing you have been out in the big bad world a few times, you'll be fine!!
Best of luck!
Six