A detailed list including opened bottles of liquor, I do the same only it is usually coffee liqueur to keep me warm by the campfire at night and a few cans of beer for DH.
It is most important that the border agents believe that the liquor/beer/wine being taken across the border is for personal consumption. If they think you're taking it across for any other reason, they might seize it. So if you have too many bottles, say a two-month supply so you can enjoy a bottle of wine each evening with dinner, they might not let all the bottles cross the border regardless of duty/tax.
Until recently it wasn't legal to transport bottles across a provincial boundary (not that anyone knew about this). Each province has its own liquor laws, and until recently they didn't have agreements with other provinces.
In B.C. it remains illegal to gift a bottle of liquor to another person. You know that bottle of scotch you give Uncle So'n'so at Christmas, or the wine gift basket you give Auntie for her birthday, well, it's not legal in B.C. There's a quirk in the law ... only liquor licensees can provide liquor to another person ... if you buy a bottle and give it to someone, you've just distributed liquor to another person. Not lawful without the proper permit.
Gee, I obviously spent too many years working for the Province of B.C. with regulatory policy. Comes in handy sometimes but mostly it just takes up too much space in my brain now that I live in Yukon.