So my advice (that I hope I follow here) is to do a Facetime or similiar video call with the family and really see what's in those boxes. Talk expectations and numbers before making the trip. I have found in many cases someone has told them that their Jamboree stuff is valuable and you might as well pop all those thought bubbles on the phone rather than in person. But that being said I have made many trips to pick up big collections and usually it's a win for everyone involved.