This type of video is designed to provide documentary coverage of all the highlights of an entire multi-day convention as it is witnessed, videotaped and edited by an unseen/ unheard video professional.
In the case of this particular convention, the video it was filmed all weekend long, edited symotaneously, and the final product wa shown on a huge screen at that very convention for the final formal dinner on the final night as a special treat for all the participants.