There were only 4 FXXs there, and I am not sure how many of them were Canadian-owned. I am certain Lawrence Stroll's is Canadian, and is the first one pictured in line. The event being almost a year ago, I cannot remember if they were for Canada for certain, but I think all 4 were in fact Canadian FXXs.
I was invited by a friend of mine, who has done his time with the local Ferrari Club chapter (I do believe he was president for a brief time) and knows a few people in the Ferrari loop. He took me there with VIP hospitality access. General admission tickets are only 50$ for all three days, which gets you pretty much the same thing as I did, but there may have been some areas where I was allowed to go and not others (such as the hospitality tent with tasty catering).