We've eaten both lunch and dinner at BOG and enjoyed both. The entrees are different at the 2 meals, but the desserts and the 2 soups are identical.
Since there are no reservations for lunch the nice thing is as long as you get in line in time, you're guaranteed that you'll be able to dine. Usually at lunchtime there's a line, but it moves relatively quickly. Everyone in your group has to be there in order to enter the restaurant so we saw people waiting in the courtyard in front of the doors.
You'll pass through the talking armor hallway, place your order at the kiosks and are then given a computerized rose that will tell the server which table you've chosen. Usually you'll be able to choose your table, but there are times when CMs seat everyone. Nevertheless, you'll be able to walk around and see all of the rooms.
All your food is brought to you on the carts that are used at dinner to present just the desserts. You pick up your own silverware and beverages. Unlike most other QS, at BOG food is served on china and utensils are regular stainless. Only the cups are plastic.
The food was very good. We had the Potato Leek Soup, the braised pork coq au vin, steak sandwich and turkey sandwich. We would order all of these again. For dessert we had 2 cupcakes and one cream puff. The cupcakes were better. The cream puffs probably had been sitting for a while because the puff was soft, rather than crisp, although it had good flavor.
I definitely feel it's worth having lunch at BOG. The food is very good and the service is a cut above the typical DW QS (china dishes, stainless utensils rather than plasticware, food is brought to you).