Some friends made a dinner reservation for this Saturday to celebrate my birthday. They reserved for 6 p.m. and the resto told them we had to be out by 8:30. Two and a half hours seems like a reasonable amount of time, assuming the resto doesn't lag with the service. Still, I find this "you must be out by" business a bit off putting. I don't dine out at fine restos that often so is this the norm?