Are there currently any capacity limits on party sizes?

There are no capacity limits per se, but it is recommended that people limit indoor gatherings to only household members or guests who are vaccinated and ideally boosted and who have tested negative (using a PCR test or at-home rapid test for COVID) within 24 hours prior to the event. Taking layered protections can go a long way toward keeping germs from spreading. These include: masking, distancing, handwashing, opening windows for fresh air circulation, washing frequently touched surfaces, etc. Unvaccinated people are encouraged to stay home. The highest numbers of cases have been among the unvaccinated, as they are at greatest risk of becoming more seriously ill, or having complications that could lead to hospitalization or even death.