The illegal part would be if they were using the frequencies for the fair as the radios are used by all non amateurs to coordinate activities during the fair such as safety, parking, ems, sheriffs, electrical, and other coordinators.
The frequency list I saw that had pairs was from way back in the 90s. They had all your colored channels and low power itinerant frequencies and they also had some higher power business frequencies that had repeater pairs. The list I had was on paper, back before computers were in everyones hands, and even that was an old list. I did some digging and I found some communication companies in the area that are licensed with VHF repeaters. I am going to scan all those frequencies when the time comes.