for our most recent trip (last week), we did lunch twice, and really enjoyed it. I highly recommend lunch time for to eat at BOG.
For the first time, we got there around 9:35 and were promptly seated around 10:05 or so. They open at 10:00 and this was a Saturday. Overall, it was a great experience as the entire staff came out to welcome us and we just really enjoyed our time there.
My son (infant baby) has a dairy allergy and since my wife is 'feeding' him we are always worried about requesting dairy free food for her. But with the process they have set up and the touch screen order process this was a breeze. By far and away the easiest allergy order process that we encountered while there. We sat in the West Wing and my oldest son (5) really really enjoyed this room.
The second time we ate there it was a Thursday and we arrived at 10:10 and were quickly sat around 10:20. We sat in the Ballroom this time and overall enjoyed it, but preferred the West Wing.
I highly recommend eating here for lunch. It's cheaper than dinner, much faster, and no need for reservations. The atmosphere and environment are still top-notch no matter dinner or lunch. A job well done for Disney.