When I shoot wedding photography, I prepare for everything I can possibly think of, except one: the candid shots. You can't prepare for these and shouldn't, because they're supposed to 'just happen'... and can't be real candids if they aren't natural! Normally they're single shots, but sometimes they're sequences of action.
I just wanted to share the example below, shot during a wedding at Sheldrakes, West Kirby (Wirral). The young lady was standing on the upper balcony while I was getting some fresh air below and looking for landscape shots across the Mersey. The wind caught her hair and I caught a beautiful sequence. I've included the first frame and then the composition I chose for the rest.