The guests will oooh and aaaah at this. Have an acoustic guitarist play your wedding march and walk in down the isle behind you during your entrance. This is not done often enough. Guests usually don't expect it and are delighted when they see it. Before you ride away in your limo or carriage release a couple of doves as a symbol of your new union.
Some couples release butterflies.
Perhaps Irish tap dancers, or have a Mariachi band with dancers.