In Louisiana Food sales must be at least 51% of total revenue . If alcohol sales exceed food sales you are a bar.
Restaurants operating as a bar can get by for a while but it will catch up to you.
But the real answer is to use common sense , you know darn good and well the difference between a bar and a restaurant and if you can't tell the difference don't carry in that establishment until you ask the bartender or waitress....simple .