I thought that was a low-numbered 'General Order'? could be true, could be some Septics not wanting to drink with the big boys...Not anymore; no consumption of alcohol while on ops for US personnel. I took a US 2* to Film City a couple of years ago for a 2-day staff visit. He was not a tee-totaller. The Swiss, who were hosting us, put on a raclette and beer at their 'chalet' but because of the rule, he was on water all night.
In my experience in Kosovo & Afghan, there were several times they got v.drunk, v.quickly, followed ineviatably by v.gobby and had to be constrained, all had to be hidden away from other Septics as they were shit-scared of being caught... Much fun was had with two of them early the next day on the dems. range south of Pristina - coincidentally the same day a Puma violated the no-fly exclusion area just as a load of Russian missile guidance thingumy-bobs were put beyond use.
I didn't know a Puma could change course that quickly