Also, I advise against driving the freeway through the center of Nashville and recommend taking Briley Parkway and loop around Nashville to the East. Toward Opryland then continue on to I40 E (the airport.) (City traffic is snarled from the North with construction.)
+1 On Briley PKWY, if you are just shooting through town. I know you are seeing family there, but it is a great bypass, right past Opryland hotel, which is worth a look around.
Didn't know you were going into the city, and if I did, Peg Leg would have been one of my recommendations for there. (Hattie B's for hot chicken would be the other.) I see some Memphis dry ribs were consumed. (Also my favorite. :drool) Have fun at the Dragon!