Watch out for Toni, he's the old Italian guy with strabismus at the front desk. Right before your interview he'll probably line you all up and start grillin' you, mostly just to loosen you all up for the interview. He's a really nice, albeit outspoken, guy. Everyone at ICO is really friendly, too.
As for the interview: relax, breathe, smile and be prepared to have a nice, friendly conversation with your interviewer about your ambitions, grades, OAT, ICO and whatever else happens to come up.