DD1 is in her first year at uni in London, studying politics, and regularly attends talks given by politicians at different universities/lecture halls across London.
She was attending a talk by a Lib Dem MP at Queen Mary's - she'd been to the lecture theatre there before, so knew where the speaker would sit, and where in the lecture theatre she needed to sit to have the best view - the aisle seats on the left hand side of the centre block of seats. She got there very early, was the first in, and sat down in the nearest to the front aisle seat on that side of the room.
A few minutes later, an old man walks in, and looks like he wants to sit in the same row, so DD stands up to let him past her. But instead of walking past, he says to her, "Aren't you going to move up then?". She says that she wants the aisle seat, and he replies, "Well, I was hoping to sit there." She points out that she is happy to let him get past her into the same row, or the aisle seat in the row behind is available, but he starts insisting that his eyesight is too bad and sitting one foot further back will mean he won't be able to see.
At this point, DD sat down and just stopped talking to him. He huffed loudly and sat down in the row behind her, and then kept muttering to himself about how awful young people these days are, until the talk started.
Was DD being unreasonable not to give up the best seat to the old man?