 Just keep in mind, same great food, but more seating, better parking, and a bigger kitchen. Zackadale Summit and your family at the Old South invite you by soon. Duval's Affordable Portable Buildings is the River Valley's oldest full-service portable buildings dealer. Seven years and counting. And without customers like you shopping local and leaving honest reviews, well, Duval's Affordable Portable Buildings wouldn't have an A-plus rating from the better business bureaus.