Q1: Do I need an appointment for the inspection, or it is walk-ins ? Q2: My vehicle inspection is already expired, do i need anything special or just go there to get it inspected now?

1. No appointments are required. 2. No problem you can get it inspected

No appointment required and you can check in person regarding the expired inspection. Have all your vehicle documents handy.

No appoint needed

Try to get there before 4 PM. Make sure you have your registration.

No appointment needed, it'll be a long line though, so choose the day and time that unlikely be comfortable for everyone else. And for the expiration, you just have to ask on the spot. I don't think it'll be a problem.