I found out recently that the South Pole receives a large amount of tourist during summer. They can stay for a couple of hours to take pictures at the Pole to staying even longer and getting a tour of Amundsen-Scott South Pole Station and some even stay the night at their camp.
The companies that run these trips setup an small city camp where they can stay and have an extremely complex logistics plan to accommodate safely moving all these people. They bring in tents and their own vehicles. Not a small undertaking considering they are not backed by any government agencies.