Agree with previous poster.. different people different tolerance..
When i travel with my wife, she always end up having to buy more winter clothes while there..
Even though we use the same heat tech (including my kids), its always her that have to buy more..
Funnily enough, usually the local brands work better for her than uniqlo.. Not expensive but cannot pinpoint the brand as she did bought a few in different countries.. Typically it is made of wool..
Anyway unless no choice, I would not want to go for winter holiday.. too restrictive.. once others get cold, alot of things cannot do.