Lang Van's WAS my fav place for 17 years.
The manager WILL let you know if you have overstayed your welcome; she literally asked my parents (from out of town) and I to leave when a line formed. We were NOT finished.
Otherwise, the service is consistently very good, the food is of high quality and there is plenty of parking. I have never had a mediocre meal but hate feeling like I'm rushed and watched by the manager if they get busy.