What do you think goes on at a Wizarding wedding? We saw a bit of the Weasleys', but it was probably a bit unconventional.

In particular, I'm writing about the wedding of Narcissa Black and Lucius Malfoy from Sirius's point of view (it happens right before his 5th year.)

Where could it have been? Who was invited? What kind of ceremony and reception? Food? Decorations? The ceremony itself? Any suggestions are strongly appreciated!

(and for a bonus--I want something big and shocking to happen at the end, maybe just something Sirius witnesses that can come back later-something probably Death Eater or early Voldemort activity related- my first idea was a bunch of future Death Eaters Imperiusing a Ministry official, but it didn't really fit the story-- any suggestions for that are also appreciated)