The stations near me are merry downers. They rarely play Christmas music all day, a few don't play them for all of Christmas Day. I'll look around the GTA stations South of me, but from what I've heard most of them play Christmas tunes for an hour here and there, but don't play it exclusively "during the season". I'll see if I can dig anything up.
Guess I could toss them an email to ask them why they aren't switching, I'm sure I'm not the only local wondering why we're still hearing the current music or the stuff from the 80's instead of Christmas tunes. Sadly, that's why I turned to internet radio stations.