WI State Fair Issues Rule Change For Parental Supervision News | August 4, 2023 | 0 | by Morgan McCarthy There is a rule change for the 2023 Wisconsin State Fair. The fair is now requiring teens and kids under 18 to have a parent to get into the fair after 5 p.m. The rule itself is not new, the fair had a similar requirement last year as well. But the change to 5 p.m. is new. Fair managers say the idea is to make sure that groups of unsupervised teens don’t cause trouble at the fair.