Share 'Selling at farmer's markets... in the heat of summer?'

Hello!  I am new on the list and enjoying reading all the posts on the forum.  I'm trying to put together a plan to start selling my chocolate in a small way (since my pottery business is full time) at farmers markets.  Does anyone do this and if so, how do you keep your chocolate from becoming a puddle?  I'm assuming coolers but... if the customer can't see the chocolate how do you convince them…