They only accept applications from LinkedIn, so if you can fake it there, you are good to go. T-shirt and jeans laid back and a tour of the yard. You can't get a more pressure free interview experience. That was my interview and everyone that hired after me. Clarify everything you want in your offer clearly. Typical starting pay is most likely $18/hr. High turnover rate at this place, so don't accept unless you understand the package.
Just be yourself. Those guys aren't very formal.
Be honest about good and bad things. Very understanding company and willing to give second chances if you have a bad past.
Don’t me nervous. Be honest with your skills and be willing to take on daily changes.