Pre-price-increase expiry dates?

Greetings from the Great White North!

Just picked up some multi-day passes today with the awesome special discount for Canadians ahead of the price increase, but there seems to be some conflicting information about expiry dates. When I go to the special offer page it says the tickets don’t expire. However, when I checked out and on the confirmation email it states tickets must be activated by Dec 31, 2017. My guess is someone flipped the switch a little early.

I’m fairly certain I’ll be going this summer, but just in case, does anyone have a guess if they will still honour the old policy? I took a screen-shot of the special offer page as a back-up.