Take one last pass down the buffet line on National Buffet Day before you get started on your New Year's resolutions. National Buffet Day celebrates our love of the wide array of choice on the buffet line. While the concept of the buffet grew from traditions in Sweden and France, the American version of the "all-you-can-eat" buffet started in Las Vegas. The El Rancho Vegas put on their Buckaroo Buffet, complete with selections of cold cuts, salad, and seafood, for just $1 to entice new patrons and keep current customers happy. It was such a hit that other hotels and casinos on the Strip copied the idea, creating a buffet culture that has become iconic to the city.