So, I changed the region on my Nintendo account to Australia so I could download the Kirby demo. Can I change it back after it's finished installing, or will the Kirby demo lock me out once I'm a 'Merican again?
I'm guessing it will be on the north American eshop within a few days, so I am trying to be patient, let me know if you figure out an answer to your question though.
I don't know; Try it and report back to us. If it does lock you out, you can simply make another account for playing Kirby and continue using your American account for other stuff.