I used to once upon a time live in a community like that.
Originally, I thought I’d have a policy that I don’t eat out anywhere except at rabbis’ houses (which wouldn’t work here, I guess). But then I decided I’d just say no where I wasn’t comfortable, and yes where I was. I ended up eating at a total of like 4 houses besides my own.
Theirs, theirs, theirs, theirs, and theirs. That’s five. But maybe not all at the same time.
Really, I would be invited and I’d just say I can’t come, sorry, thanks for the invite. Nobody ever pressed the issue.
I was surprises at the people who thought I would eat at their house. I’m like, if you write on facebook that you’re eating at a non-kosher restaurant, I’m not going to eat at your house! (But instead I just said I can’t make it)