Booze. That's It.

Drugs are very uncommon on campus, apart from one well-known eating club. Apart from that, most people on campus stick to drinking, with the occasional cigarette being a rarity.

P-Safe Can Be Tough

Public safety, if they catch you, will be strict. While you are safe on the Street or walking around campus drunk, DO NOT ever drink outside. Drinking in your room is safe, provided you are never caught with a drink in your hand. As for parties in dorms, make sure that there are no drugs (if drugs are found, everyone at the party gets punished), but feel safe going to one. P-safe doesn't come too often, usually only in cases of extreme noise. Just don't get caught with a drink in your hand, and you are fine.