El Dorado, AR. Come out and enjoy the day in Downtown El Dorado at May on Main. This fourth annual event, presented by Main Street El Dorado, will be held Saturday, May 4th, Starting at 10am on Jefferson Avenue and Elm Street in Downtown El Dorado(201 N Jefferson Street El Dorado AR). This festival is a collaborative effort with the Mayhaw Festival, which begins at 8am on Jackson Street.