I don't think that I ever saw a senior NCO or officer after dark. They left us alone because of the fear of being fragged. The hootch scene was real, I lived it, with the dope and music. Platoon was a little overdone, but every scene in the movie happened, at least once. BTW, I arrived at age 18, had two birthdays and came home age 20. It was a war fought by teenagers, and we were good troops, but at times a little messed up. Remember, we had no phones to call home. We had no email. It pretty much sucked.
I worked for a guy one time that spent 4 tours over there with the Marines. He was an Arkansas stump jumper that had never seen television until he got to boot camp. He was in the motor pool, and their favorite diversion was to drive a truck out into Ambush Alley and back. The guy that collected the most bullet holes was the winner. I think this guy really missed Vietnam since it was so much better than where he came from. :0)