Yesterday the CDC announced that it was reinstating mask recommendations, even for those fully vaccinated, in areas across the country that are seeing 'High' or 'Substantial' community transmission of Covid-19. Luckily for Michigan, most of the state is at a 'Moderate' or 'Low' transmission rate.
The CDC mask guidance relates to the addition of a mask made of cloth, worn along with a medical or surgical style mask. Lab experiments have shown that the combination results in up to 95% effectiveness in preventing the spread of the COVID-19 virus.
Gatherings of people from different households are not recommended for attendees or hosts. The CDC says things get even dicier if you need to travel very far or come in contact with lots of people as you conduct your travels.