One of the girls sleeps in just a shirt and panties

The father, mother and children are seen several time in their underwear. There is a scene where you can see one of the girls are using the toilet.

Throughout the movie, but not incessant; mostly milder cursing, little use of f*ck.

There is a scene in the film where a man smokes from a bong, and in a different scene the same man smokes a joint.