Originally Posted by
gglave
Are you asking if there is WiFi at YVR? The answer is yes - It's ubiquitous and fast.
I think OP is asking about the mobile data "pocket" wifi routers that are common in Japan and Europe. I've never seen anything like this in Canada.
For a short trip, you may come out ahead buying a roaming plan from your home operator rather than buying a SIM card in Canada as the prepaid options are fairly expensive come with fairly small data allotments.