Vaccine mandate for a private group

Rudeness? A better, and more accurate, term would be "caution".

The recourse would be to not attend the dinner.

 

Good for them. Given attendees would all be pushing 70, it's a prudent requirement.

 

Of course

I'm sure you meant to ask whether or not you have any way to force them to put others at risk because of your obstinance. The answer is that you have every right not to attend. That'll show 'em!

 

The CAN is often evidenced by the DID.

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Yes.

I'm unsure what "rudeness" you're talking about, but the law does not require politeness or civility or provide recourse when folks are rude.

 

The law does not very much regulate private ad hoc groups like a couple of people who decide to do the planning for a high school reunion. Those setting up the reunion event are generally free to set whatever requirements they want for those attending the event so long as the requirements do not violate the law, of course. Federal law nor NJ law require such a group to allow unvaccinated people to attend such an event. If anything, the the laws would tend to be the other way, requiring masks and/or vaccination for large group events.

The bottom line that if you want to go, get the vaccinations required by the group. Or choose not to go. Getting the vaccinations is not hard, generally free, and doesn't take a lot of time. And the vaccines have proven to be pretty effective and safe for most everyone to take. So while you have the right not to get vaccinated, it seems to me to be an illogical choice. The vast majority of people dying from Covid-19 or becoming so ill from it that they need hospitalization in this country are those who are not vaccinated.