The person can be on elbow crutches with a carer so no issue there either. Can i suggestr that you either take a mobility scooter as it takes ages to get around the halls or hire a scooter on the premises. I think it is £15 for the day so well worth it.
Thanks for that useful information, Surfer. I certainly didn't know about that particular concession. You've left me wondering now if the NEC show has the same arrangement if the disabled person is not in a wheelchair and arrives with a carer intending to pay at the door? They would not necessarily have proof they were disabled.