I went to the Daily Grill with a colleague for lunch. (Both of us are youngish looking.) We were told that the dining room was completely full and that we'd need to wait 15-20 minutes for a table to open up. But the host told us that the bar was open for seating. We preferred to be seated in the dining room, but we said fine with the bar. As soon as we sat, I had to go to the men's room. To get to the men's room, I had to walk the length of the dining room, and it turned out that there were several tables open. Mind you, this restaurant isn't the type of restaurant where it's reservation only. There are plenty of people who come in without one. And I'd been here before during lunch before (with an older crowd).
This restaurant tend to attract the older business crowd, sprinkled with some power brokers. My guess is that they saw two young people and didn't think we were their typical guests. They wanted to hold space for the grey-haired, more experienced crowd for the dining room where the hosts thought the guests would spend more and leave bigger tips.
I usually don't like to complain. But my last visit to the Daily Grill was an unpleasant experience where we felt like second-class citizens.