Going to the farmer's market on Saturday is pretty much turning into a ritual for me. It is such a fun way to start the weekend.
The produce is great, I bought some cherry tomatoes one weekend and I never want to buy them from the store again. I did not realize how good fresh tomatoes can taste. It takes a lot of restraint to not buy Stella's cheesy bread but if you have people visiting do buy your guests some! I also have seen an emu meat vendor. Can't say I've tried that yet. Herbs are great to purchase here they are usually a $1 for a handful. Great deal.
Parking- I usually park in one of the garages around the square, the farmer's market really only takes about an hour to do a lap so you won't be paying more than a buck or two for parking. Or you can always park a little further maybe 4 blocks away if you are willing to walk and then parking is free.
Walk in the SAME direction everyone else is walking. It will make your life easier.