Two trends are tying the knot: adventure travel and Destination weddings. For some, a Caribbean beachfront Wedding -- long the staple of destination nuptials -- has grown too tame. Too common."Couples are looking for any type of way to be original," said WeddingChannel.com senior editor Christa Vagnozzi. "They really want to showcase their style and originality."So, while one in 10 couples now