My rsvp is an automatic +1 but not plus two. They don't love pimps like me. (well, actually, they do) If -you- rsvp via facebook, you'll get your automatic plus one too.
http://www.facebook.com/maledictionsociety#!/event.php?eid=114527548601306I'd love to do dinner (though my budget might not!). Anything in particular you're interested in trying? Could grab a bottle of sayuri (a big bottle is like 12$) for much cheaper predrinking of our own?
As for a hotel... I'll have to ask around some this afternoon. I'm a silly pseudo-native that really doesn't know much about the hotels here but I can at least make sure you guys aren't in the ghetto.
edit: Aw, that sucks.
For the theme, I have no idea what I'm going to wear. I tried wearing bokken on my waist one year to that event and they didn't let me bring it in! Good thing I'm friends with the general manager and he kept em safe.... Oh! You could go as a school girl ;P