Balso, thanks for your reply. I was considering our waterproof rain pants (instead of snow pants) because they don’t take up too much space, like you said. If we wear them with pants and long underwear, hopefully we would be warm enough. I did a test of our luggage and I think we can each fit our snow boots in our carryon, which is good.
Someone said snow boots are needed because you use your feet to steer on the way down. This makes sense, and boots above the ankle would help keep the feet dry while going down.
You mentioned good tread. Is the good tread necessary for walking up hills without chair lifts (and generally walking around in icy/hard pack conditions)? Or is the tread also needed somehow for going down?
My husband and oldest son have good tread on their snow boots. My youngest son and I do not - we just have “regular” snow boots, from Lands End if you’re familiar with that store. The bottoms have some tread but not much. I have worn them hiking on flat trails in the winter, but if it’s icy or hilly we attach yaktrax to the bottom for more grip. That would work in Austria if the tread is just necessary when walking around, but if tread is necessary when going down, the yaktrax would fall off. Thoughts? When and where is the tread necessary? I suppose we could also bring our ankle-high waterproof hiking boots as another option, although not as warm.
Thanks so much.