If you've ever tried to collate photos from multiple sources after an event, you know just how challenging it can be. By integrating into Facebook, your page acts as a central repository for all event photos, including information collected via your post input fields, such as who took the photo and perhaps even why. Why wait until after the event to view photos.
Why stick to one or a handfull of photographers who miss out on lots of photo opportunities, especially when every guest / patron is equipped with a state-of-the-art camera - their smartphone. Empower all guests / patrons to partake in the fun and help build your event.