You actually don't even need travel documents, I have gone without them several times. You should be getting them soon, however.
First off what time is your flight from Vancouver??? Cab lines can be VERY long at Canada Place. If you have a flight after 1pm- which I strongly recommend, and the wait is a mile long, haul your bags- (key anyway with traveling is to have quality rolling bags and pack light) upstairs to the Pan Pacific, tip the doorman and you will have a fast cab. Most take credit cards which will give you the best exchange, allow 30 mins. and cost at least $30++=ca