HBP theater finding help

[weddingbeaches.livejournal.com]

Hey you guys! So I'm on vacation in San Francisco for the next few weeks and I need some help finding a good place to see the Half Blood Prince movie. I don't know anything about movie theaters in this city, so if anyone knows a good one to go to where people would dress up, I'd really appreciate the info. I'm staying downtown, so preferably something I can take a bus to or such that a taxi wouldn't be obscenely expensive. Thanks!