One word: Wang. Well, two, VERA WANG!
Just Kidding, disregard that, except streak_56
maleficent is right, decide what you want and then plan from there. Your wife to be will probably be in charge of some things but the location, photographer, food, people, etc will be something you decide together.
This day should be enjoyable for you, your new wife, friends and family. Focus on doing that. It's a celebtration after all.