(2) He shows his intimate parts for the intent of arousing or gratifying the sexual desire of the performer or of every other person under circumstances where the actor knows or reasonably anticipates he is likely to be detected by a person who because of mental disease or defect is unable to comprehend the sexual nature of the actor’s conduct.

This subsection is also insignificant to naturists because, as I comprehend it, sexual gratification isn’t born at your events. In any event, the criminal isn’t the man who hosts the celebration, but the individual committing the act. At worst you could be charged as an accessory a charge that would just stick if you actively encouraged the act.
Statute: NJSA 2C:24-4 Endangering welfare of children.
Description: degree.
This particularly includes nudity but only when nudity is depicted for the purpose of sexual gratification. That isn’t the purpose of a naturist event. Again, the possible Defendant here is the kid’s parent, not you, so long as you’re not promising to supply any sort of childcare service.
Legislative Act: NJSA2C:33-12.2. Sexually oriented business, annoyance; offense
2. a. As used in this action:
(1) “Sexually oriented business” means:
(a) A commercial establishment which as one among its primary business purposes offers for sale, rent, or display some of the following:
As long as you aren’t selling any depictions of nudity, this does not apply to you.
Statute: (b) A commercial establishment which regularly features live performances characterized by the exposure of a “specified anatomical area” or by a “specified intercourse,” or which regularly shows films, motion pictures, video cassettes, slides, or other photographic representations which depict or describe a “specified sexual activity” or “specified anatomical area”;
As long as there are not any performances or movies shown at the big event, this does not apply to you personally.
Statute: NJSA 2C:34-2.Description: older
Description: section:
Description: details:
Description: genitals,
Description: and
Description: interest.
There is nothing obscene about the human anatomy. This has been created in many Courts, including the US Supreme Court and New Jersey’s own Supreme Court. This is not going to affect you.
Statute: NJSA 2C:34-3. Obscenity for men under 18
Description: activity.
It does not care whether the content has artistic or educational value and it comprises nudity paired with sensuality with sufficient impact to concentrate prurient interest on the area or task. This may not look like a high bar to get underneath, but the fact that this qualification exists, means that nudity alone is not obscene to minors. http://www.nudist-video.com in a school library isn’t obscene, nor is Kurt Vonnegut’s description of a image of a girl fornicating with a horse in Slaughterhouse 5, because it is clear that there is no intention to stimulate the prurient interest.
*If there were any kind of performance, dancing, display of a movie, or anything else besides people hanging out in the nude around a pool and steam room, I would keep the minors home.
Statute: Description: level.