Check into a guesthouse after landing. In the afternoon, take a walking tour around Vaiaku Village: stroll past the government building, national bank, post office, and small church, and handle cash, commemorative coins, and postcards all in one go. Watch the sunset by the lagoon in the evening.
Snorkel over the shallow reef in the morning—the water is warm year-round, and most guesthouses rent out snorkeling gear. In the afternoon, walk out to the end of the causeway and return along the outer reef side to watch the waves. Ask your guesthouse to prepare a meal of fish cooked in coconut milk for dinner.
Hire a boat in the morning to visit the nearest uninhabited islet for a picnic and birdwatching, then return in the afternoon. Rent a bicycle to cycle around the atoll, passing through coconut groves and villages. Always ask for permission before taking photos in front of churches.
Watch the morning light by the runway, check out, and head to the airport. If your flight is in the afternoon, you can add another morning snorkeling session.
The estimated cash budget for a four-day trip is around 500–700 AUD per person (excluding international flights): about 300 AUD for meals at the guesthouse, 150 AUD for boat hire and snorkeling, with the rest for transport and commemorative coins. Life in Tuvalu moves very slowly—confirm any activities with your guesthouse host at least one day in advance, and keep the schedule loose rather than packed. Leaving some time to simply sit and watch the sea is the best way to experience atoll travel. If you arrive on a Sunday, spend the day immersed in church singing and a family lunch—that could be the most memorable and gentle moment of your trip.