I can't speak for every meet, but the Strengthlifting meets I entered were basically the same in structure.
I showed up for registration and rules meeting at about 8-9am. They told us what flights we were in, and the first flights starting warming up their squats. There was a main room where the competition lifts were done, and there was a back room where lifters were warming up on a series of racks. Deadlifts were neat because we basically just loaded one platform with 135, another with 225, another with 315, another with 405, and then we just worked up the ladder for our warm ups.
Here is the biggest advice I can give you. Keep as many things similar to your training as you can. Do you always drink coffee before you lift? Do that at the meet. Have you never done pre-workout? The competition is not the place to try it. Do you get psyched up with music before a big lift. Do that too.
As a consequence, you should train at least once with the singlet you'll be wearing at the competition.
The second advice I think you'll need is that your openers (the first attempt of each lift) should be weights you could do on 2 hours of sleep, no food, an injury, and a flu. There should be no doubt in your mind that you can hit your openers. You should also plan to succeed on nine out of your nine attempts for your first meet.
The SS podcast about this topic is pretty good.
Have fun, man. It's a great time.