The obvious choice for Exit of the bride and groom is a rousing version of Mendelssohn's Wedding March. However as with all other parts of the ceremony, there are many other wonderful pieces to suit the celebratory mood.
Here are a few points to consider:
You will probably want to choose upbeat and celebratory music. This marks the point where the formalities of the wedding service end and the fun can begin!
Just as with the Entrance music, think about the length of your chosen piece of music. Ideally the music should be playing until the very last guest has left the venue - this can be several minutes in larger spaces.
Although you are not allowed to choose a piece of music with a religious theme, in many ways you have more choice with your music as you can be less traditional with your choices.