Personality is important, but when i'm recruiting crew they must have a little bit of noddle about them aswell!
Appearance is important too. Don't turn up at an interview with your tie halfway down your neck, shirt untucked and shoes not polished and expect to get through the group stages!! Most interviewers worth their salt will be able to extract what answers they want from you, but you do need to research about the company (if possible) and practise interview techniques.
Nesboy