Do you have the room and budget (and tolerable weather) to rent a very large, open-air tent? Here in Wisconsin, it’s the perfect weather for that kind of party. I could see doing that. You could maybe rent fans to keep the air flowing. You’d probably need to spray for mosquitoes. Anyone who feels like they aren’t getting enough ventilation can just move closer to the sides of the tent/crowd. You could maybe have some games for littler kids (of the unvaccinated age) outside the tent area. I’m just spitballing. But I definitely think a party is possible with some thoughtful precautions.
" I object to violence because when it appears to do good, the good is only temporary; the evil it does is permanent." Mahatma Gandhi
"This is the ultimate weakness of violence: It multiplies evil and violence in the universe. It doesn't solve any problems." Martin Luther King, Jr.