Got Zone 5 again for my paid preferred seats today, contrary to what I've been getting the last few months and contrary to AC's stated policy on their website. Boarding with Zone 5 yesterday (all five of us on my second flight) was not so much fun. I just managed to find a spot for my under sized bag. No enforcement of their carry on rules doesn't help as many people simply had too much or a bag that was too large. On an E90 that makes a difference.