The venue:
Book the ceremony/reception well in advance you may be able to negotiate a better price then you would if you left it to the last minute.
Have your wedding on off-peak months. November to April rates will probably be reduced. Christmas weddings are more expensive though so if you are planning a Christmas wedding you will have to cut your finances.
Instead of a grand ballroom or banquet hall, think less-expensive venues, like publicly owned buildings and parks, registry office, the church or temple hall, the backyard, the beach, a restaurant’s …