Interesting statement about layouts being to high for wheelchair users, it a challenge but we have to remember not all disabled or less able are in wheelchairs and that some people can't see the layout if they are too low i.e using crutches or sticks or if they have a visual impermanent. You can't please everyone all the time.
I found the show a good all round show with something for everyone and the traders managed to extract money from me too..
Good work David Barker and team.....