I had my name change hearing today. Our case was supposed to be the fourth one heard, but the judge called us up right at the start, said it was approved before we'd even gotten to the front of the room, and sent us on our way.
It was pretty chill. So, I wouldn't worry about it too much.
By the way, I just wore sweats. So either my judge is a very nice guy, a very impatient guy, or it doesn't matter much.