Quote Originally Posted by elanor_lupin
Though soda is said in Canada, pop is another word for soda up here.
The more common word in Canada is actually pop, soda is very seldom used. Also serviette is a Canadian French word, like toque - so it is commonly used, but the English <napkin> is used just as often.

Regarding milk bags:
Yes, Canadians do use milk bags, but milk can also be bought in cartons, or less commonly, jugs.