While the title of this begins by mentioning Mabel Normand and Fatty Arbuckle, much of the film doesn't even feature them and they appear to be tacked onto a bunch of stock footage of the Panama-Pacific Exhibition (technically not a world's fair). As far as this footage without them goes, much of it is poorly framed (they couldn't get everything into the shot because the camera was too close) and much of it was bouncy as it was filmed from a rocking ship--and this isn't surprising for the port of San Francisco.
Overall, some might find this interesting since you get to see so much of the city that no longer exists. Unfortunately, this still didn't make it particularly interesting....especially since Mabel and Fatty essentially had nothing to do in this film.
Overall, some might find this interesting since you get to see so much of the city that no longer exists. Unfortunately, this still didn't make it particularly interesting....especially since Mabel and Fatty essentially had nothing to do in this film.