Follow these steps
1. log in to your account
Using your ID, log in to your account. Don’t have an account? Create one!
2. Clic on buy tickets
Once you’ve logged in to your account, click on “BUY TICKETS” under the “Your Purchases” tab. 
3. Enter the promo code
In the “See your tickets” column on the left, enter the promo code and click on “ok” . 
4. Take advantage of your discount!
Once the promo code has been entered, you will be taken directly to the promotional offer. All that’s left for you to do is to choose your tickets!
Should you have any questions or need help, please contact the Opéra de Montréal box office at 514.985.2258 or at info@operademontreal.com