2. you can live in those chinese family inn. i.e. Yi Min Zhi Jia, there are a lot of such small hotels there.
3. there are several one-day tours in Vancouver, like Victoria one-day tour and City one-day tour, etc.. you can find them on web.. fee is about CA$ 80-90 each person, if include tax and tip.
4. you can confirm your return ticket in airport when you arrive Vancouver.