On the one hand, I feel sorry for you. Yes, why couldn't they just have you over for dinner and talk like human beings.
On the other hand, I see this Family Worship thing as a source of potential problems for the society at some point. I keep seeing families inviting other families over for FW Night and planning what topic they're going to talk about on social media. What you have then, really, is private study groups - something the society does not want.
Just wait: there'll be a Kingdom Ministry article about how FW Night is just for your family, and not an excuse to have your own private study group. That could be dangerous!