In fact, your Presto card can open the door to a range of discounts at major attractions and events in Ontario that you might already be planning to attend. Throughout the summer, Presto cardholders can access exclusive savings on everything from festivals to sporting events and nature activities. Here are some of the current perks available with your Presto card. Ontario Honda Dealers Indy TorontoOn July 18, Presto users can claim up to two free Paddock Passes (worth $60 each) by entering their Presto card number at checkout. With your Presto card, you can redeem 15 per cent off your ticket by entering PRESTO15 at checkout until Sept. 30.