What is Christmas like for people who celebrate it in the Southern Hemisphere?

I was Just wondering what were the cultural events and decorations that take place during Christmas for those who celebrate it in the Southern Hemisphere like South Africa and Australia. In the U.S. and Europe, Christmasis ociated with cold weather and staying warm. We drink flavored warm drinks and huddle around fires with Christmas trees and wish for a white Christmas. It must be so different if it's blazing hot outside. Seems like it would be really interesting an fun to experience Christmas with barbeques and pool parties.