Walk in like you know what you’re doing.
Ask about your account, a file you’re working on, or how a court wants something filed. One question first, so you are not shown three hundred things that have nothing to do with you.
Which court are you dealing with?
Rules vary a lot by county, so this is the question that saves you the most time after the last one. A partial answer is fine — anything missing falls back to the level above, and we say so when it does.