Wedding coordinators charge differently, depending on the situation. If you are paying for a facility, the use of their on-site coordinator may be included as a part of the fee. If you are using a church, they may provide you with a list of approved coordinators, often at a set fee. If you have asked a family member or friend to play this role for you, you can decide for yourself what you feel is an appropriate way to thank them for filling this important position.