As a New Zealand passport holder venturing to Tonga, you'll find the process remarkably straightforward with a visa on arrival, allowing for a generous stay of up to 31 days, perfect for exploring the archipelago's pristine beaches and vibrant culture. While no specific visa type beyond the standard tourist option is needed, it's wise to be aware that flights often connect through Auckland, adding a few hours to your journey across the time zones. Remember that the Tongan Paʻanga (TOP) is the local currency, so exchanging some New Zealand dollars before departure will ensure smoother transactions during your visit, especially since it's less than a 4-hour flight away.