Neerim South is approximately 110km east of Melbourne.
To get driving directions and a trip map from your home town to Neerim South, get into Travelmate or Visit Victoria Maps. I personally would drive to Drouin, then take Main Neerim Rd, the C427, (on the Melbourne side of the township, with the white Drouin Motor Inn on the corner) out to Neerim South. This avoids taking a number of minor roads, although might take 5-10 minutes longer.
The festival is located at the Recreation Grounds, in Neerim East Rd (opposite the secondary college). For a map of Neerim Sth, visit Neerim Sth Map. or download this Neerim Sth Map PDF kindly adapted by Maps Plus, Warragul.