Just curious what kind of service everyone is having? Just Holy Matrimony? Holy Matrimony tied in with another service?
Our church has a service called Evening Prayer that is really beautiful and not too long. We're planning on doing that, with the Holy Matrimony inserted somewhere in the middle. We get to sing more hymns this way.
I still worry a little that some people will think it's too long, but it's my wedding, not theirs. That and 75% of the guests are from mine or my parents' church.