Atiu's distinctive social institution: a weekly men's drinking gathering in a thatched bush clearing, where a single brewer (the tumunu) ladles out homemade orange-flavoured beer to a circle of guests in turn. Each village has its own and visitors are welcome at most of them — often the highlight of an evening on the island.
Ask your guesthouse host which tumunu is running on which night and who can drive you. Bring a contribution (cash or a small bottle of spirits) and follow the rounds — drink when the cup comes to you, pass it on, listen for the call to silence between rounds.