(See Flemming's Post below)
They open at 5pm. I arrived at 515 and the bar had only about 6 people in it. The bar area started to fill to capacity at 630 or so. I had their vintage Vodka Martini with Blue Cheese Stuffed olives (Handmade) and the Flemming's Burger (It was fantastic and probably one of the best burgers I have ever had) then another martini and a little later a glass of Cabernet. (My dinner companion could not handle 2 cocktails). So the total for two Burgers, 3 Martini's and 2 Wines was $54.00 with tax and a generous tip. Not bad for a quality place with quality service and people. If you have not tried it GO!
In the past few weeks I have gone to the 5 for 6 until 7 and it gets quite crowded pretty early. If you attend try to get there as close to 5pm as possible :)