In-transit travel through Canada - Alcohol etc

I'm sure we'll find out about available wine in Canada and we're already on board with various beers.

This thread was also posted for information and there could be a variety of reasons for using this procedure like:
1. For Alaska it could reduce costs or ensure availability of a favored drink.
2. Transport from the lower 48 and return might be desired vs having to enter Canada with limited supplies.
3. While the duty entering Canada may be high we now have one example of the costs.