This was me at a Harry Potter and cursed child showing. We booked aisle seats But when the tickets came they were actually five seats in. When we arrived, these seats were taken by a family. I explained to them that we requested an aisle seat due to my size but there had been a mix up. I explained I was worried about being too big for seat. The lady said not to worry it would be her sat next to me and her son needed the aisle seat for his long legs.
When I got in I realised I was completely jammed. My legs were practically under my chin and I swelled over the seat in every which way. It was mortifying and I kept on moving as I was almost panicking about the Jammed ness. But was conscious that this must have hurt my neighbour.
It was uncomfortable for the lady and my friend, and I was absolutely mortified. At the first intermission I spoke to the staff and they said the only option was to watch on the TV screen in the bar area. This was far from ideal but I did it anyway. It's not that family's fault that I am too big for the seat. And whatever the muck around with the seats, they had the ticket for the aisle seat.
We saw the whole show. Which is four parts and three of which I saw from the tv in the bar. Still loved it.
So I guess what I am saying is, sorry you were crushed. The lady was probably mortified, however I think you were lovely to sit in silence as it must have been horrible for you.
I don't Know what the solution is. I was so grateful for the theatre letting me watch it from the bar.