Hallmark Recordable Storybook
Have you seen the commercial for the Hallmark recordable storybook? It's the one where the grandfather is acting out the stories for the grandson and the recordable storybooks allow the grandson to hear grandpa even after "he returns to Nevada."
I can't help but think of the backstory to the commercial. Why is grandpa staying with the parents in the first place? How come you don't see the parents in the commercial? Here's what I think - grandpa got into a little bit of trouble over gambling debts and has to lay low at the kid's parents house until he can come up with the scratch which allows him to return to Nevada. You don't see the parents because they aren't really happy with grandpa.
Maybe I'm reading too much into the commercial.