But not many anticipate being shown up by a giant beluga whale.
The sea mammal wanted to pop in and see how the wedding was going and was caught in an hilarious picture.
Guests snapped the whale appearing to stand beside the blushing (and surprised) bride.
The pair were tying the knot at Mystic Seaport in Mystic, Connecticut.
The funny picture doesn’t suggest when the snap was taken but internet users think it could be when the priest asked if ‘anyone knows any reason these two should not be married.’