It really depends which doctor you get..... Schapira is the worst.... Rotundo is the best. And I've had everything in between. Meglis is pretty good too. Of course if you have a good doctor and bad doctor in, everyone is requesting the good one. And the regulars know who is good and bad. So the lineups are longer.
I always get there half an hour before it opens so I'm one of the first five in line. That seems to work okay.
There are better clinics. I go to here just for convenience since it's close to my place and the subway.
The people in the waiting room are annoying. Like they just complain. Some will come in an demand that they should see a doctor first. Okay, we are all waiting. Wait your turn. Be patient. I hate it when people come in and they are like "ugh, an hour late, I don't have the time". I don't either. But I have to do it if I need to see the doctor. So deal with it. I don't think that's going to change but I haven't seen anything like that at other walk-ins clinics.