For me, the inspector came to my house.
We made sure the fridge was cold, the warmers were on, and there was hot water for when he arrived.
He felt the temp of the hot water and measured the temps of the fridge and warmers with a therometer.
Our guy didn't ask many questions at all but provided a lot of handouts about handwashing, outdoor cooking, and the way to shelve items in the fridge.
I was all kinds of nervous before he arrived but after visiting with him, he just wanted to make sure we were serving safe food.
Do it the right way and you will be fine.