2020 is far enough to allow you time to learn French, mes amis! Your next post should be in French. In some case, it could be hilarious. I could tanslate...
I'm living close to Montréal and worked for 30 years at the Montréal Botanical Garden. If you have time to do something else than watching skaters, this is a must place if you like flowers. Even if the weather is not nice, there are 10 greenhouses to visit. The Insectarium, just beside, should be during their "Butterflies goes free" exhibits. Thousands of butterflies flying around you. And if you are more attracted to animals, the Biodome is just on the other side of the street. Four ecosystems recreated indoor. The Metro will leave you at one street corner of these muséums.
We are a little early to start discussing access, hotels, food, but if you could deal with the nordic winter climate (and some slushy days in between), Montréal is a place loved by most tourists. BTW, if you are a little insecure, French is usually the first languages used (it's a law) but you will have no problem to be served in English, especially if you take the time to say a few French words. Most, if not all, hotels and restaurants downtown will welcome you with both languages, "Comment puis-je vous aider/How can I help you?"
And no, there is no subway yet near the airport.