Will I be charged roaming fees if I use my Australian, New Zealand, or US SIM card in Tonga?

Yes, absolutely. Tonga is an independent kingdom and is definitively not included in standard domestic plans from Australia, New Zealand, the EU, or the US. Your home carrier will impose extremely high 'Rest of World' or satellite-based roaming rates, which can quickly lead to a very costly bill. HotelESIM offers a smart, budget-friendly alternative. It provides reliable local connectivity, ensuring you stay connected for hotel bookings, local navigation, or sharing your beautiful Tongan experiences without the worry of exorbitant charges.