“What business is it of the governments how many visitors a home-owner has, and how often?”
Your question is rhetorical but does it envision dozens of cars coming in and out of a residential area to attend a weekly rap music clinic conducted in a private home?
There is a dozens-car party in our neighborhood on the order of every week. I don’t know whether there are Bibles being read or rap being performed. Why is it this relevant?
Personally, I wouldn't have any more problem with that than I do the weekly extended-family get together my neighbors have. They can get pretty loud when they're barbecuing. :)