One thing we have found in the last 4 years, is most people don't care. Obviously there are some. But most people don't care. If you just keep it simple, "we live an alternative lifestyle and it works for us" then let them ask what they want to know-most people really only care about what personally impacts them.
Obviously-children and parents, extended family don't fit-because they tend to think it does impact them even if it doesn't.
But for the rest of the world, they usually aren't interested unless it's "a high drama possibility" and that disappears quickly when it's just not dramatic.