i've never really been to one before to be honest. i'm gonna mask up and dress plainly and all that. i still don't know what to expect or if there's any social protocols to be aware of while going to these. i'm autistic and very nervous please advise 
This ^
Phones are a liability, don't get tracked. Tell someone you trust you will be going. Never take a plea deal if you get arrested. Even if it's a public defender it's better to have them talk to the cops. "Loose lips sink ships"