Army Reserve MP here and let me give you a few pointers. First off, always do the right thing. If you forget to do the right thing, do the next best right thing and just fess up. Almost lost a weekend pass because I ate a candy bar at the PX one time. Myself and my battle buddy fessed up for it because the cashiers will rat you out to the drills anyway. When we got back from PX and everyone was told to dump their bags out, candy bars galore and no one fessed up like we did. We got our pass after an ass chewing session and everyone else's got canceled. Second, don't do anything to attract attention to yourself, that's bad karma man. Lay low, do what you're supposed to and study your smart book front to back and memorize just about everything in it, not just what you're gonna cover that day because sometimes there's spare time for training and it helps to know what the task requirements are ahead of time. Third, volunteer occasionally, not all the time. Sometimes, even volunteer for the $hit jobs that no one else is volunteering for because 9 times out of 10, those pay off big with the drills. Don't be a suck up though by always raising your hand when asked. Fourth, never, ever listen to your walkman/CD-player too loud and forget to listen for drills coming into your bay. Was jamming to some Chili Peppers shining my boots in about week 13 and saw two shiny boots in my peripheral vision. Got my ass smoked for listening to my music too loud. Fifth, don't take any porn or contraband with you in hopes of hiding it. If you do get some porn in somehow, make sure you stuff it in one of your "personal letters" from mom, dad, girlfriend, etc. They usually can't look at your personal mail in your wall locker, but everything else is fair game and they will look EVERYWHERE, trust me. A misplaced picture of Asia Carrera showed up once in my wall locker by accident, hidden in the bottom of my travel kit and I got busted big time, by a female drill sergeant no less. Well, that's about all the practical knowledge I can impart to you short of ruining the experience. Unfortunately I went to Fort McClellan, AL when that was still the MP school in the Army, so can't say much about Ft. Lostinthewoods. BTW, what unit you joining and where are they out of?
PS-if there's a guy with $hit breath in your training class, donate some hygiene products to him. If a guy keeps you awake at night crying (literally) about leaving his fiance for 4+ months and mentions in passing that he wants to die, make sure you and the other fellas collect up enough shoe laces to make a nice hanging rope for him. Show those weenies the love they deserve and definitely, definitely don't be one of 'em.