If you want a little of a renaissance wedding, then medieval music could just do the trick. Obviously, there are outfits that you will need to accompany the theme. Think of this: the groom dressed as Sir Lancelot and the bride dressed as Lady Guinevere. This would just be perfect for that evening, especially those flashing cameras.
Many couples come up with the greatest themes, and these are based on places they met or enjoy together. A simple example is a couple who met in a city. This makes them want to celebrate that particular city, or even go and hold the marital there. More extreme couples have exchanged their vows underwater, while sky-diving, or even while mountain skiing. Why not create your own tradition or promise your love to each other somewhere on an island?
Jot down all the ideas that you will fancy for this event. Remember everything you imagined enjoying together. This is your wedding - as a couple - so; let it reflect the two of you as that couple.
Start the theme with the invitations. Signal your guest about the theme in the invitation. They should arrive at the wedding blending into the theme. It will end up being an event back in time. Don’t make the theme too demanding, or a few people won’t want to go along with it. A wedding that has a little of an alien theme will come across as a great idea, but if it is the party that is only taking part in the theme, the whole event will just seem a little strange.