Wedding Photojournalism?

There is a brides-t0-be asking me this question: What is Wedding Photojournalism? This is what I got from WIKIPEDIA:-

A wedding photojournalist is a person who takes photographs during a wedding using an alternative approach where images are captured spontaneously to emphasize moments and emotion. Much like photojournalists for the media, wedding photojournalists present the story of the day through their photographs. A wedding photojournalist typically shoots images quickly using available light or on-camera flash rather than using traditional, formal posing techniques and studio lights. The phrase wedding photojournalist has been in vogue for at least 10 years and has now become almost synonymous with normal wedding photography.

So why hire a professional actual day wedding photographer? Think about it...