Like Ms. Blaney, I continue to be concerned about us directing someone. You can call it whatever you want: encouraging them, recommending it, informing them. Call it whatever you want, but we're in some way going down a path where we are sort of directing someone as to what language they should choose to speak. I don't think that is appropriate. People should have the choice. We have two official languages. They're both equal. People should have the choice to speak whichever of those two languages they choose.
As for the suggestion that we remind people about this opportunity, I'm not even sure what that looks like. Before each person speaks, are we going to say, “By the way, did you know you can speak either English or French?” Then do we suggest that it might be better...? “It seems that you are a francophone, first of all, or an anglophone, first of all. May we suggest you speak in that language?”
I just don't see how this becomes anything besides awkward. People just have to make the choice about which language they speak, which language they're comfortable in. We have two official languages. They are both equal. People make that choice based on their preference.