Several instances of characters making out, with one implied to lead to sex.

A character lunges at someone, but hits their face on a mirror, shattering it. They flee the room with some blood visible.

A character has their face slashed with a broken bottle, and has a scar for the remainder of the film.

Several fistfights

No swearing, only mild name-calling like "punk".

A character chugs a bottle of liquor in a fit of despair.

Several characters smoke, and one is seen doing so in almost every scene (sometimes multiple within the scene).