Any advice for American tourist who visit Montreal concerning the ATM

I remember when I met an old friend that I didn't see for awhile. We went at the Bank of Montreal ATM and there was two American tourist who were unable to withdraw money with this ATM. The fact is the Bank of Montreal provide mastercard instead of visa card. This guy didn't know the word for the ATM in English and they those tourist to go the McDonald's restaurant, then I told those travaller, to go the Desjardins ATM because that bank accept visa card and they didn't need to cross that street. I told my self I better off to be honest with people. What you should do is to check out any logo on the ATM for any bank instution instead of withdrawing any private ATM.