MEMPHIS, Tenn. -- The National Grocers Association of America presented awards to two Piggly Wiggly operators at the national convention of operators of that franchise here last month. Kevin Doucet, part-owner and full-time store director for Dales Food Stores, which operates one Piggly Wiggly supermarket in Opelousas, La., won the NGA's Spirit of America award. Robert Tucker, owner and operator of RFT Enterprises, which owns two stores in Hot Springs, Ark., received the Piggly Wiggly Entrepreneurial Scholarship to attend the NGA's four-day seminar hosted by the NGA Center for Family Owned Business. The scholarship is co-sponsored by Piggly Wiggly Company and Coca-Cola and presented annually to an operator whose business will be passed on to the next generation