Having many seat hours behind me
I have experience with the FA intrepretations of "willing and able"
SW, which I occasional fly, takes it up a step (not quibbling here) if they were to notice that you are unable to lift your carry-on into an overhead then you have to sit elsewhere
But today on SW 1 they astounded me by stating that they noticed I was wearing hearing aides and that by doing so it would mean I couldn't sit in an exit row. I immediately took them off and sat down in the exit row since I now was in compliance with what they stated was an FAA rule.
It was a quiet uneventful flight after that
