When I moved to Sarasota in 1999 I was invited by a prominent local to an "un-wedding wedding" to make new friends in town. I accepted the invitation and, not wanting to display my ignorance, avoided asking the burning question, "What's an un-wedding wedding?"
Inevitably I found out what an un-wedding wedding is. It's a full-blown wedding, only the host isn't actually getting married. They want to get married but aren't, and go through the motions anyway.