Hi skeeter1, Have you thought about leaving a copy of Raymond Franz's books (i.e., "Crisis of Conscience" and "In Search of Christian Freedom") or Don Cameron's book (i.e., "Captive of a Concept") in the guest bedroom? I am willing to wage that those JW relatives will never bother you again.
Another option would be to invite someone else to stay in your guest bedroom for a week or convert your guest bedroom into an office, so that the JWs would have to stay in a local hotel. Your guest bedroom might be too attractive and comfortable for them to stay in a local hotel.
Peace be with you, and everyone, who you love,
Robert