Answer 1:
Not many people go to Antarctica. Mostly only scientists go to Antarctica - and for only one reason - to study.
Answer 2:
Tourism to Antarctica is a surprisingly lucrative industry. There are many people who pay to fly over or cruise to Antarctica. There is no accommodation for them, but they simply want to glimpse the pure, majestic beauty of the region.
People who live and work temporarily on the Antarctic continent, do so after being hired by a government. Nationality may not be a condition of employment, so there is no restriction by nationality to these opportunities.
There are no nationality restrictions against tourists who sail to the Antarctic continent from New Zealand, Australia, Chile, Argentina and South Africa.
Some people like scientist should be allowed on Antarctica's unique ice sheets, as they need to study and do scientifical research.
Whereas, tourists go for the peace and quiet and astonishing natural beauty. Many tourists are older, since touring in Antarctica is expensive, and older people have more expendable income than younger people, who spend their money raising their kids.
Many people visit Antarctica, if they can afford it. Often groups go, scientists or teachers etc. We need more people to visit Antarctica, so they can feedback to the world the numerous potential threats to it.
Scientists and tourists.
People who work in support of science -- seven for each scientist granted research money -- also work and live temporarily on the Antarctic continent.
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You can review the site, below, to learn the names, nationalities and locations of the research stations in Antarctica.
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No humans 'live' in Antarctica, but people representing many governments work there as scientists and in support of science, so ethnically, you'll always be companions with a rich mix of nationalities.
Explorers to go to Antarctica to explore: this is their work.
There are usually several scientific groups of various nationalities living and studying on the Antarctic continent - so there will also be several languages spoken.
People dress warmly to go to Antarctica.
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There are no towns in Antarctica.
The tourists go to Antarctica during the summer or the winter
Unless a child is allowed on a cruise ship, there is no way for a child to go to Antarctica.
You can go to Antarctica as a tourist if you can afford it: cruises being among some of the most expensive cruises on earth. Or you can go to Antarctica and work in support of science, by applying to your government's representative in Antarctica. The USA government's representative in Antarctica is the National Science Foundation. Finally, you can go to Antarctica as a science if you are funded by your government to investigate a question pertaining to the health of planet earth.