First, let me say as a native Charlottean that grew up eating at the 'Old Hickory House' on North Tryon Street my opinion about BBQ may differ quite a bit than yours. The 'OHH' was renowned for their open fire-pit fueled with real hardwood logs and the meats cooked tended to be heavily smoked with a heavy 'bark', or crust, that is only seen with an open fire-pit method of cooking.
Pellet or chip smokers like the type used in most modern BBQ restaurants can't replicate this method of cooking meat, IF this is the type this restaurant uses. When I do BBQ at home I do it in the same manner, albeit on a much smaller scale.
So with that said, when I tried R&R today for the first time I found the flavor of the pork and chicken (I tried both) a little bland for my taste. For sides I had their Brunswick stew and baked beans and again found both a little too pedestrian for me. A good shake from the Texas Pete bottle saw to that problem! As a southerner that grew up eating many different versions of Brunswick stew a REALLY good one needs the smoke flavor from the meats used in it to enhance the overall flavor.
Please don't misunderstand this review and think I didn't enjoy it. On the contrary I found it quite good and overall satisfying. The overall quantity and quality of the food was as expected. Service was good, even though it was lunch time and they were a little busy.
Some people may not like meats as heavily smoked as I do so you may like this style of BBQ. Give it a try and judge for yourself!