One medium-priced hotel and a handful of small private guesthouses exist on Funafuti, but camping is not allowed. A 10 percent government room tax is added to all accommodations charges (often included in the quoted price).
All of the outer islands except Niulakita have guesthouses run by the island councils where you can stay for A$20-30 pp. It's essential to announce your arrival by calling the particular island council from the Telecom Center in Vaiaku. Otherwise seek advice at the Ministry of Rural Development.
It's also possible to arrange accommodations with local outer-island families, but be prepared to renounce all privacy. Vaitupu has a small privately run guesthouse, the first outside Funafuti. The guesthouse attendants will do laundry for an additional charge.
Some of the island council guesthouses ask surprisingly high amounts for food. In such cases, each guest may be given a tray laden with corned beef, fish, chicken, pork, rice, taro, breadfruit, bread, biscuits, and cake, plus an enormous pot of tea—far too much to finish. As soon as the guests stop eating, the trays are carried out to the veranda where a small crowd of women and children will finish everything off.
It's hard to get around this unusual situation, and not all guesthouses provide cooking facilities. Inquire about meal prices beforehand, as they vary from A$35-75 for three meals. If the quoted price is absurdly high, consider bringing groceries with you on the ship. The guesthouses themselves may not be as clean and tidy as you would wish.