It's going to suck, we know this, it's near certain, but it's general release is 5 days after Otakon and this is what I'm thinking. If Otakon fails to have any sort of exclusive deal with this movie, they aren't doing their job and it's high time they hired someone who can organize a convention to be current and a trendsetter of conventions in the west.
PS, if you can't do this, a Japanese band that we've actually heard of would be appreciated (ie someone comparable to L'arc~en~Ciel)