I think my sister liked the movie, or most of it anyway, even though I was sure she would hate it since it's not the type of movie she'd normally see. And yes, I had to explain many of the plot points and other unusual things she noticed (e.g. airships in New York, the 51-star US flag, etc.)
Oh yeah, I almost forgot about the Two Bernies.
At least they'll appear in a deleted scene on the Black Freighter DVD!