I'm traveling to Vancouver BC for a long weekend & wondering if my samsung tablet will be able to connect with wi-fi there, what it might cost and whether there are any special security issues?
It will connect to WiFi just fine and shouldn't cost you anything other than if there is a charge for the wifi you're using at a hotel or whatever. This is usually included though.
As for security issues, you'll be on public WiFi likely so don't be using banking sites etc
It should be fine but those are just precautions to take.