I flew out to Australia (from Switzerland) last August for a 6-week vacation. I expected a warning to recalibrate the compass but it never came. I had no problems, although I only made short flights in the end. Also when I returned home there was no warning. Maybe I'll do a recalibrate anyway sometime soon.
We were in the Northern Territory and Western Australia and I found that connectivity RC-Drone were much better than at home - in a lot of areas there was no other WiFi or phone services, especially NT. In WA I couldn't fly to much due to very strong winds along the coast.