Can anyone give this rusty hound some interviewing tips?

Okay, I'm not that much of a rusty hound but I've been in union construction for 5 years, basically my whole working life after college and I don't got much interviewing experience besides all I know is to smell good, look good, sit up straight, have a positive attitude and try to crack a few smiles. I think this is a group interview which makes me nervous, I'm very outgoing when knowing people and or being in a very small group, not big groups.

I just hope I don't bomb this interview because this is one of the best paying jobs in the area and easiest type of work. I hope my construction background wows them.

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