Certain places in the middle east consider drinking alcohol a crime- you have to find someone you can trust and meet them out at night to get say, a fifth of vodka.
On the other hand, in some of these places, it is perfectly socially okay to say, chew on the Khat plant (it's a cathonine, YAY!) at bars and such. Opium is readily available as well, in certain places.
Even tobacco issues differ from country to county- a lot of the world smokes Kretek cigarettes (like Djarums) and here in the states, the FDA put a legal ban on the selling of clove ciggies, (something about flavored tobacco being appealing to children or some such bullshit, not even joking). Keep in mind however, we still have Menthols. You can still buy clove CIGARS, but they don't taste the same, kinda gross if ya' ask me.
Anyways, a lot of times our drinking problems are noticed more and more around the world sometimes more than anything else.