Scroll down. The information provided to the tourist was incorrect. Tourists can use their Drivers License from their State/Country as a Form of ID if they don't have their passports on them to prove their age.
"Foreign ID is also acceptable if it is equivalent to an acceptable type of Canadian ID, such as a foreign passport or driver's licence."
Comment from Emily S. of Duke of Kent
Business Manager
1/16/2017 Dear Sean,
Thank you for your feedback. We follow the Ontario law and we only accept passports as a valid form of ID from guests who are from outside of Canada.
Regards,
Amanda B. H.
Marketing Manager Read less