The Medieval Fair is the state's largest weekend event and the 3rd largest event in Oklahoma, and was selected by Events Media Network as one of the top 100 in the nation. http://www.medievalfair.org/
Bring lots of money because the sodas are $3, funnel cakes $7, corn dogs $5, turkey legs $9 and those are the cheapest. Be prepared to spend $200 easily but the live events are amazing and it's fun!