Weird sudio things that matter ~ if you ask me:
Click or No Click:
A click track is awesome. A click track is evil. There is a right answer. It depends.
One thing I know for sure is that unless the songs are well rehearsed to a click,
then don't record 'em to a click.
Record the songs the way you've rehearsed the songs.
Headohones are evil. Headphones are necessary. Almost all recording sessions
require monitoring in the 'phones. It's a skill and it takes getting used to.
Dress for Sucess:
Wear comfortable clothes, and materials that won't make noises when you move.
Big zippers and buttons and most jewelry can make sounds that get picked up by
the mics. Consider your hair, too, bacause you'll most likely be putting on
headphones and you'll want those to fit properly.
Keep in mind that even in big studios you'll be working closely with other people.
And most control rooms aren't that big. Avoid perfume and cologne.
Thought For Food:
Plan the food situation especially for longer sessions. And even for shorter ones.
If you're going to eat in the studio you'll want to plan on stuff that isn't too messy.