On the first Friday in September, The Adelaide suburb of Wayville hosts the state's biggest event. What is the event?
Wayville, South Australia: Wayville is an inner-southern suburb of Adelaide in the City of Unley. Wayville, South Australia:  It is most notable for its hosting of the Royal Adelaide Show at the Adelaide Showgrounds. Royal Adelaide Show:  The Show always begins on the first Friday in September, and runs for 10 days (9 until 2013).
Royal Adelaide Show