Why risk a DNF on your lunch run when this is a guaranteed smiley? You shouldn't find any snakes or poison ivy unless your GPSr is REALLY having a bad day. No fancy planning, shopping, or costumes needed for this event either. Just buy your own food and see those you know and meet those you don't. There is easy access from the Oxmoor Road Exit 256 on I-65, but then again you are a Geocacher so I don't need to tell you how to get here, right?
The early birds will probably start arriving by 11:30 and there will probably be some still around until 12:30 or 12:45. Come on out whenever "The Man" lets you out.
If you haven't cached along Greensprings Highway, there are at least four caches within a quarter-mile of the event. Three of them are pretty easy finds.