Is roaming free in Réunion with my UK, US, or non-French EU SIM card?

It's a bit tricky! While Réunion is a French territory, roaming policies can vary. If you're an EU citizen, 'Roam Like at Home' might apply, but many non-French EU carriers often have 'Fair Use Policies' that limit data in overseas territories, or even charge extra after a certain cap. For travelers from the UK or US, Réunion is almost certainly considered 'Rest of World,' incurring steep daily charges or per-MB fees. A SouthESIM offers a predictable, budget-friendly alternative without any surprises.