The olive festival is the perfect time to go check it out. As well as all the tastings there will be a South African food village serving traditional SA chow and also an art exhibition showcasing internationally-renowned local artists. The organisers say there will be plenty of parking, as well as a shuttle service lifting people to the various venues.
I'm really bummed I can't make it this year but if you're looking for something to do you should go. Trust me, it is worth the trip.