Gastonia is so close to Charlotte, that it would be a great place to eat. Twin Tops is a great Fish Camp, will be open on Saturday night, but is closed on Sunday. However, across the street is Grahams, which offers a Seafood/Country Buffet. Or if you turn left right past Grahams, go about a mile to Cat Fish Cove, they have a wonderful Sunday Buffet. It would be on the right, before you cross the River.
New Hope Road is one of the main exits off I 85 in Gastonia, Just head south on New Hope Road about 3 miles