That is a very good question.
I have held meetings. Some airport authorities have obligations that they did not use to have, for example, in the case of airports that now handle one million passengers per year. Sometimes, these people are not aware of the obligations that they have. So first, we have to inform them that they do have these obligations. In such cases, I am listened to politely, and people are interested.
My office had prepared an information campaign for passengers. We wanted to conduct a pilot project at the Winnipeg airport. The project was accepted, but at the last minute, the people from the Canadian Airports Council changed their mind and refused to allow us to inform passengers of their language rights, claiming that this would lead the passengers to believe that these rights would be respected. So now we are trying to think of a way that we can make the travelling public aware that it does have rights and that these rights should be respected.