Want to revisit your favourite destination in New Zealand or pursue your favourite activity there along with a loved one, and that too for free Then just go through your photos of New Zealand and post them on Facebook, Instagram or Twitter with the hashtag #NZMustDo and tag the person you'd love to take along this time. Tourism New Zealand will short-list 10 finalists for the #NZMustDo competition and its Facebook fans will vote on the winner, which will be announced in June. The prize includes two return international airfares flying Air New Zealand and seven nights&rsquo accommodation, activities and transfers.