Outdoor fairs and sales are difficult. I used to do a Farmer's Market every Saturday in Annapolis Royal, which was about half hour up the coast from where I lived. We were overlooking the ocean and it was beautiful on those sunny, warm days but there were more days when it was windy or even foggy which also ruined lots of stuff. I stopped doing it because I would have to keep re-doing the cards for my pins, as they would run from the fog and many days it rained and was windy or bad out and just not worth it. I think you have to be really 'lucky' to do outdoor sales. Every time is taking a chance. Your display looks nice, but I am sure it is hard to keep up with the wind and all.
Sheila