Perhaps you and your soon to be spouse already have children together or maybe there are children from previous relationships. Whatever the case may be, when you get married, it is a unity ceremony for all of you, not just the couple.
To ensure your children always feel as if they are part of the master plan and that their needs matter, include them in the wedding. Just as the bride and groom feel a bond forming at the wedding, the children will feel the same way. The special and unique experience signifies that you are now a blended family.