Don't worry about the interview. They're are lots of little "cliques" within this company and you only get hired, if you fit into one of those already established cliques. If they later find out that you do not "fit"; (my manager at least, will set you up to fail and then fire you over things that would not even phase him when judging employee's he likes.
I am in one of those cliques and I have really learned to hate the behaviors of my colleagues. A co-worker of mine who was on contract was fired last week with the only reason being that I was apparently "tattling" on her on several occasions. Since she was a contractor she has no legal protection from this bullying. I am angry I was used as a "scape-goat" b/c I never met with my boss on any occasion to discuss or even reference my co-worker failing to comply.