I have not had any problem on Westjet traveling to both Cuba and Mexico carrying on four piece rods and reels. I use an old Orvis bag that holds five rods in their tubes as well as a number or reels. Most do not allow you to carry on flies so I have always checked them.
I know that the show is going ahead as planned and advertised. The retail locations (Cabelas, Wholesale, etc.) were not able to sell tickets but tickets are still for sale online (IF4 website) and are for sale at the door. Hope that this helps!