Girl wears bikini and skimpy clothes at several occasions in the movie.
Very mild sexual references, with the exception of three stronger scenes:
Two scenes implies sexual activity but is not shown, another scene shows a guy preparing to masturbate but he is interrupted (no nudity) and another scene shows the same guy getting an erection under a sheet (no nudity).
A guy performs suggestive yoga moves on the wives. One of the women enjoys it. comments are made later that it was inappropriate.
There are several discussions about sex (heterosexual and homosexual), masturbation, etc.
A man gets out of a pond naked, he stands there naked with a branch and leaf blocking the view of his genitals.
A couple is shown kissing and it is implied that they are about to have sex.