This package is for the couple that has everything or almost everything planned and booked. They know what the need and only require a point in the right direction.
If you have everything booked and need some one to run the show. You could ask a family member or a friend, but would you want them running around trying to make sure that everything is running smoothly. You could do this but then they wouldn't be able to enjoy the day with you. The would be to distracted with the details of your day. Then when coming up with your time line do they know the proper load in times for your vendors. Will your friend or family member be willing or able to be at your venue from set up to break down (typically 10-15 hours). If a problem is to arise will they know what to do and allow you to relax and enjoy your day.