Just to let you know how quickly they have responded and how seriously they have taken the compliant. Here is a paragraph from their letter to me which arrived via email today:
Your family's experience has highlighted grave flaws on our website and we are taking them very seriously. We will review the online application for accessible ticket purchasing and will make every effort to provide clarity. There are already changes in language on the site today and we are looking into changing our seating maps to indicate stair locations as well as explanatory notes for the "non-fixed" seats in the new year.
Again, I'm pleased to know that this has resulted in making things better for others who follow. I also wanted to acknowledge good corporate response to complaints.