Upbeat Dinner and Drinks on a Sunday Night?
Sunday night is rough, lots of places aren't open, and I'm not sure what you mean by a decent bar scene.
I'm not sure if these places are open on Sundays, but I would check into NOLA, La Boca, or the Delachaise is an actual bar with really great food. Open after 6 on Sundays. Not sure if you can eat at the bar at Tommy's, but that would work, too.