Probably wanted to discuss bug-out options for the Cabal and needed a place they knew wasn't bugged. Antarctica- why not? Also provides a good misdirection (unless they were asking Nazis and ayyylmaos already there).
Later countries on that tour were NZ, the UAE, Morocco, and Peru. All decent bug-out spots.
Cabal puppet John Key resigned shortly after the NZ visit so something definitely happened there. Plus there was a big earthquake. Could be coincidence.