Some people who are planning their weddings don't really know where to begin. Even working with a wedding planner won't always be enough in a situation like this. Wedding planners will ask their clients questions about what they want, and not everyone will have all the answers. People who are planning their weddings should try to get a sense of the sorts of wedding ceremonies that are currently popular, since this might give them some ideas.
You've taken the big steps of getting married and hiring a wedding planner to take care of all the details of the wedding and reception. That planner has been working with you for months, and you're both going to be happy when the wedding finally arrives because then you can both take a break, right? Once the party's over, though, the wedding planner's job isn't done yet, and you'll see the planner continuing to work because now it's time to wind up.