Jenny, et al,
Are you saying that the initial two doses of vaccine, or initial single dose of J&J,
is not enough, people must also have a booster to attend?
Yes. An exception would be for people who became fully vaccinated
too recently to be eligible for a booster.
Please see "COVID-19 Vaccine Boosters":
? ?
In particular "People are best protected when they stay up to date with COVID-19 vaccinations,
which includes getting one booster when eligible."
Hoping you have been, and remain, healthy!
Dan