Hi there
We're flying in Oct/11 and the following is the itinerary:
YVR-PEK - Air Canada
PEK-BKK - Thai
BKK-NRT - ANA
NRT-YVR - Air Canada

Having never flown business class before, I have several questions:
1. With the business class tickets, are we automatically eligible to use the bus. class lounges at each airport? If so, which would be a good lounge to use in each airport?
2. Are we eligible to use any Star Alliance lounge at each airport?
3. How do we find out where each of these lounges located at each airport?
4. Do we leave the lounge and get to the departure gate on our own or is there a different gate for business class passengers?
Sorry for all these questions. Some of them might seem quite ignorant but we just wanted to have to all information avail. ahead of time.
Thank you for all help and inputs.