Hmm where to start?
We set a date and a few weeks later were told we'd have to choose another by MIL, because BIL (who got engaged after us) had decided on a wedding date that she considered to be too close to ours.
My mother interfered in every single aspect of the wedding planning, bitching and whining until we finally caved in to some of her demands. Invited lots of her friends who I'd never even met.
Twenty minutes into the 40 minute drive to the ceremony, I realised my flowers were still on the dining room table at my parents' house. We went back for them but I was only about 10 minutes late in the end.
My exit from the bridal car was a little undignified, as my sister was supposed to help me with my dress but instead stood there pissing about with her camera.
Forty nine of my husband's 'friends' failed to turn up leaving us with many empty seats and a lot of buffet food waste.
The best man popped home after the ceremony to check on his partner (who didn't want to come to the wedding for whatever reason) and never returned. BIL had to stand in and make an impromptu speech.
My cousin was late to the reception because she and her DH went to the wrong venue where there was another wedding in full swing. They'd helped themselves to champagne and a selection from the buffet when the bride approached them and they realised it wasn't me.
Husband turned out to be a knob and I divorced him.