I enjoy it when I can. It does rain in some places but very rarely. As Antarctica is still such a new and unexplored place to us we could say that everyone that goes there is a polar explorer. There are also numerous people who set out on adventure treks across the continent or to do things like walk to the south pole. As you seem to have worked out getting water in Antarctica is very difficult.
Some stations have machines which distil sea water.
That is, they take the salt out of the sea water and keep the fresh water. The Tank House which gets all of Casey's fresh water from the melt lake behind. The blue building behind it is the weather balloon launching shed. There is probably natural gas in Antarctic. We generally do our heating with diesel fuel and electricity.