I'm not the best person to give some tips about what you can do here in Vancouver, but I'll try.
First, you always have to bring with you some coach and gloves. The weather here is crazy, like Lisa, my Austrian friend. Don't forget the coins, because you'll need a lot of hot chocolate to keep you warm. No beers. You're not allowed to drink on the street.
Second, be careful when you cross the street. You can't cross in the middle of the street. If you see your friend on the other side, forget it. You have to come back until the signal and cross. Yeah, it's not nice, but is safe.
Then, you can walk in downtown and go shopping. But bring your father's credit card because the things here are not cheap. After two days in downtown, you need to do something different. You should go to the parks and the cities near here.
That's it for now.