We will be travelling from Calgary - Banff- Revelstoke - kamloops- whistler & vancouver. What is the weather (generally) in all these areas ? I don't want to carry any more luggage than I have to this year. Hoping to travel with carry on luggage only !! (as a woman- that's going to be tricky!!) So unless a fleece/coat is absolutely necessary - I won't be taking one. Another question is footwear - we will not be doing anything particularly adventurous - so would one pair of mules suffice ? we are visiting the Athabasca glaciers - so would shoes be ABSOLUTELY necessary or could I get away with mules. We are a package of 2 adults and 2 children 12 and 11 - so it's a question of sandals versus shoes for them also. I guess everyone would shout "shoes" ????