My suggestion is this: When Mr. W comes by to pick up the girls, as he's leaving, you say "Would you like me to pick them up Sunday afternoon?" If he says "sure" then you can get directions and so forth and then say "Listen, I'll be happy to bring dinner if you think that would help - I know moving can be such a pain." And leave it at that...If he accepts, great, if he doesn't, no big deal b/c he's just got his head stuck further up his fish butt than you thought.
