I'm not 100% sure how it works at other places, but I've been in two provinces and you don't need to show them anything for either. Everybody gets it. That's why Tuesdays are the most busy.
You don't need to be a TELUS client to take advantage of Telus Tuesdays. At first I didn't even know if was from TELUS.
I hope this is what you were talking about, but it sounds right.
In Manitoba you get a free voucher for a reg popcorn and reg drink with your ticket and in Quebec the ticket prices are $5