Important Notes

Andorran citizens are eligible for the New Zealand Electronic Travel Authority (NZeTA). This is mandatory for all visa-waiver travellers arriving by air or cruise ship. The NZeTA is valid for multiple entries over a two-year period, allowing stays of up to 3 months per visit. The cost includes the NZeTA fee (NZD 17 for mobile app, NZD 23 for web browser) and the International Visitor Conservation and Tourism Levy (IVL) of NZD 35. The total cost provided is an approximate USD conversion (NZD 17 + NZD 35 = NZD 52, which is approx. USD 32-35, but rounded to 17 as the NZeTA fee itself is the primary cost, and IVL is a separate levy). For simplicity, I'll use the NZeTA fee as the primary cost. The total cost including IVL would be higher. Let's re-evaluate the cost to be more precise: NZeTA fee (NZD 17-23) + IVL (NZD 35). Total minimum NZD 52. Let's convert NZD 52 to USD. As of late 2023/early 2024, NZD 1 is roughly USD 0.60-0.62. So NZD 52 is approx USD 31-32. I will use 32 USD as the cost. The processing time is usually very quick, often within minutes or hours, but can take up to 72 hours in some cases, so 'null' is appropriate for immediate approval, but it's not 'not applicable' if it takes time. However, the user asked for 'number (days, or null if not applicable)'. Since it's not typically days, 'null' is the closest fit for 'instant/hours'. Let's stick to the NZeTA fee for the 'cost' and mention IVL in notes for clarity, or combine them. The prompt asks for 'cost: number (USD, or null if free)'. The NZeTA itself has a cost, and the IVL is mandatory with it. So it's best to combine them for the total cost to the traveler. NZD 17 (app) + NZD 35 (IVL) = NZD 52. NZD 52 is approximately USD 32. I will use 32 for cost.