Yea, and in this case unless the property owner says no filming said person would have no legs to stand on. In most 'fun' events like this with random members

Yea, and in this case unless the property owner says no filming said person would have no legs to stand on. In most 'fun' events like this with random members of the public said venue has a monetary interest in ensuring people can film in the vast majority of the cases. People go there to have fun, and sharing videos of said fun is but one more way to ensure they get future customers.