You might try contacting the local chambers of commerce near Johnston:
Edgefield County Chamber-Cmmrc (803) 275-0010
416 Calhoun St, Johnston, SC
http://www.chamberofcommerce.com/public/index.cfm?

Saluda County Chamber-Commerce (864) 445-3055
111 N Main St, Saluda, SC

These restaurants were found on the internet, don't know how current they might be.

Sconyers Bar-B-Que (706) 790-5411
2250 Sconyers Way, Augusta, GA
*************
Hardee's (803) 275-3926
300 Lee St, Johnston, SC
www.hardees.com (serves breakfast, burgers, chicken club, fish and parmesan sandwiches and such)
**************
Chicken Place (803) 275-3403
614 Railroad Ave, Johnston, SC
************
Wade's Southern Suppers (803) 275-9100
222 Weaver Rd, Johnston, SC