Depends how lenient you are
I am a 14 year old and we watched this film in school. There was many scenes with nudity and nudity implied. I will tell you all that I recall. Many butts scene in fairy house, a man grabbing another woman's breast, a bunch of nude girls in a pool, a man and a woman having sex and her hair Barley covering her nipple, near the end the main characters were all lying down naked and then they stood up but the woman had leaves covering there nipples butt they did a backwards scene and you could see there butts trough the brush. There were lots of sexual implements but no major nudity. It really depends how lenient you are. I suggest 14 years of age or if you are a lenient parent 13 years of age and if you are more on the strict side I would say 15 years of age. It is not a completely appropriate movie to be shown in school in my opinion. I don't recall cursing and there is no violence. There were many drunk fairies as well.
What other families should know
Too much sex
Too much drinking/drugs/smoking