The Old Hickory Steakhouse would be a suitable choice, but comes with a hefty price tag. Do you have access to a vehicle? I would maybe consider trying something more southern and Nashville related. Monell’s at The Manor isn’t too far away from Opryland, maybe a 10-15 minute drive from the hotel. You’ve got countless options if you’re willing to drive into the city.
Do you have any preferences/budget/location?