Some passionate kissing throughout the movie.

A woman and a younger man make out (no nudity). The scene is pretty sensual.

A woman is shown naked (butt) followed by some passionate kissing.

As well as the points listed above, there are three scenes actively depicting sex. This includes sensual touching, gasping, passionate kissing, and thrusting.

Both of the sons have semi-clothed moments in two different sexual situations. Ian's back and butt is clearly on display, though he's still wearing jeans. One shot shows Roz pushing his pants down, as well as Ian removing her panties. He also lifts her leg and you can see under her dress a bit. In another scene, Tom's butt is in shadow. It's still visible since he wears only a shirt.

Tom and Ian start a fight near the beach.

Mild profanity throughout the movie. Characters talk of boobs in front of their sons. 13 uses of f**k.

One use of "f***king c**t." It's shouted in anger after the fight.

Ian smokes a lot. Roz smokes some. Tom smokes a time or two.

Wine and beer is heavily featured.

A few times it's mentioned that Tom's drunk, though not noticeably so. He vomits due to alcohol consumption, but it isn't shown on camera.

There's a scene at a bar where Lil is obviously drunk. Ian drives her home.