John Smith had four beers at the "Showroom Pub", a licensed facility on the grounds of the "Canadian National Exhibition" between 11 am -1 pm. He then returned at 5 pm and consumed three glasses of wine.  Upon leaving the facility in the evening, he fell over a low railing on the stairs that lead from the Showroom pub to the Exhibition grounds, struck his head, and landed on his back leaving him with a severe spinal injury. John and his family sued the Canadian National Exhibition on the basis that they did not make the grounds safe enough to protect him from getting injured.  

Answer the following questions:

1. Who is at fault in this case? Why?
2. What legal principles can John and the family use in their claims?
3.  What could the Canadian National Exhibition have done to prevent this lawsuit?
4.  If you were the Judge how would you rule in this case? Why?