Christianity, brought to this part of the Pacific by the London Missionary Society in the 1800s, infuses every aspect of
life on Tuvalu and going to church with your guesthouse host is one way of tapping into that.
Try to attend a service in English if you can; the Tuvaluan service drags on a bit, but the singing is beautiful in any language.
Your host will probably invite you to join them afterwards for Sunday lunch, an extended family affair called a “tonai”, where you’ll have a chance to sample typical Tuvaluan fare such as fresh fish, “coconut apple” (sweet, germinating coconut) and breadfruit loaf. Just remember to wait for someone to say grace before you start eating.