Bit far for me to go but I would surely love to. It would be so much fun. The closest that I get to that sort of thing is volunteering at the ABG. Their plant sale is in a few weeks, then Gala in the Garden with silent auction, sale of garden art (some is several thousand dollars - usually the metal stuff), then a regular garden fair with vendors of the sort you mentioned: food, garden art, clothing, you name it. If the weather is nice it is a wonderful day to spend walking through the path through trees and gardens. As a volunteer I get in free (except for the gala which is spending - 'free' wine and food though
).