Max and tsantos pretty much nailed it. The first meet is a learning experience and nothing more. Go there, have fun, aim to hit all your 9 lifts, check the rules of that federation in advance and you're golden. Candito's 6 week program is a great way to prepare. Never go freestyle before a meet unless you really know what you are doing.
Edit: Forgot to mention this: train paused bench press for the entirety of the next 6 weeks. I made the mistake of not doing it in my first meet and my bench sucked donkey dong then.