Dolly Parton isn’t just a country music superstar. She has built an empire. At the heart of that empire is Dollywood, a 150-acre fantasy land that hosts three million people a year. Parton’s prodigious talent and incredible celebrity have allowed her to turn her hometown into one of the most popular tourist destinations in America. The crux of Dollywood’s allure is its precisely calibrated Appalachian image, itself drawn from Parton’s very real hardscrabble childhood in the mountains of east...