Just want to be clear - I disagree with the title of the thread and believe preboarders should sit wherever it is safe and convenient for them. Here to share an interesting experience below-
Last night boarding in DEN, there was a literal parade of wheelchairs and preboard passengers. I started counting and lost count at 23 or so (there were more). I have never seen this before, and the first 10 rows of the aircraft were taken up when I boarded with a low A. It was bizarre, and I have not had that experience before. I don't blame the preboarders at all, just merely an observation.
Is this a common occurrence?