Tenzin needs a break from his family and hopefully unlike Korra, he won't bring a pity party with him because Katara is there to help too. It makes me wonder if Katara approved more of Lin or Pema. I have a feeling it's Lin though. And Bolin wants her happy but like him, she has some manning up to do. And Mako and Asami can train a bit but it should be more fun than formal.