Ceremonies are activities designated and identified as a way to commemorate a special occasion. Your special day is a ceremony that should be an extension of you, your rituals, your cultural beliefs and values. Celebrate the things that you hold true. Traditional activities hold so much meaning and history that it is interesting and fun to share with your guest.

The Indian bride
http://www.youtube.com/watch?v=pbHj3-xqRYs , after a ceremonial cleansing, is painted with mehndi or henna patterns on her hands and feet(normally done at traditional Indian and Arabic weddings). Any woman who is a guest of the bride, family or friend is invited to get her hands and feet painted as well. After the ceremony, the brothers of the groom toss flower petals to ward off evil from the Newlyweds.

African Americans couples
http://myspacetv.com/index.cfm?fuseaction=vids.individual&videoid=11613009
practice the tradition of jumping a broom to symbolize the happy couple's union and new beginnings (provide guest w/ the historical reason why the broom is jumped) as a part of their traditional ceremony. Jumping the broom is an activity that was done out of necessity (during the time of enslaved Africans) and today is done as a matter of respect for the history and memory of those enslaved Africans in spite of the struggle.

The Jewish tradition is one that holds a lot of richness which is often translated into wedding ceremonies. The wedding ceremony usually takes place under a chuppah, or wedding canopy. This tradition began in the Middle Ages when a couple would wed outdoors so that the marriage could be blessed with as many children as there are stars in the heavens.
Cultures even have ceremonial activities that pay homage to loved ones who have passed but are important to the bride,groom, and the family as a whole.
To see two cultures come together in love is beautiful and something to behold http://www.youtube.com/watch?v=417Hs1wT3d8 .
So, please feel free to incorporate your traditions into your ceremony...You will be happy you did, your other half will feel like they had an opportunity to share something special with you, and your family and friends will remember it for a life time.