Roth is right. It's a mind game, pal. You're going to be stripped down as an individual and molded into a "unit." But, knowledge is power. And, as long as you know what's going on, you're going to be just fine.
Kiddo, I couldn't be prouder of you if you were my own. I also hope that you'll be wearing the green when my son comes out of Quantico in a few years. He'll need a seasoned NCO like you'll be to show him the ropes and teach him when to duck.
God speed, my friend.
Good Luck, and hopefully I will be able to give ya a big "Semper Fi Brother" in three months. Even though it isn't Parris Island, I had several buddies that were Hollywood Marines and they didn't turn out too bad! 8)
Just make sure once you graduate, you stay in long enough to make Gunnery Seargent, cuz Gunny Gunnar sounds too damn cool.
Good luck and God speed my young brother. As the gentlemen above have all stated it is a mind game , just keep your head and your composure and you will be fine. Thank you for your service and to all above who have served.