When I made a trip a couple of years ago to Charleston, SC to Savannah, we went through Beaufort and Frogmore (among other places), and found a little gift shop in Frogmore. As it was @ lunch time, we asked where was good to eat. I believe it was on Monday. The owner of the gift shop suggested Steamers. http://www.theoriginalsteameroysterandsteakhouse.com/ordereze/1000/Page.aspx
The place was really cool!!! "The Big Chill", and "Platoon" were filmed in Beaufort, and the casts of both films hung out at Steamers. There is a lot of film memorabilia. The employees are happy to share their memories. Good service, and good food.