Rude to bring iPod in van full of people?

[MikeyPatriot]

The ladyfriend and I are going to see the new Harry Potter move tonight at an IMAX theater with a bunch of people. We're (I wanna say between 6-8 people) all traveling in one van. I do not particularly like Harry Potter, or fantasy movies/novels. The ladyfriend reminded me that almost everyone going is a huge HP nerd. I half-jokingly said I would bring my iPod with me.

Ladyfriend thinks that's incredibly rude, I think it isn't rude at all. What does OOT think?

FTR, I'm not actually bringing my iPod.