Can I expect 'Roam Like at Home' functionality in Réunion with my non-French EU SIM, or my UK/US SIM?

While Réunion is an overseas department of France, the application of 'Roam Like at Home' (RLAH) for non-French EU SIMs can be nuanced. Many EU carriers impose Fair Use Policies (FUPs) for data consumption in remote territories, potentially throttling speeds or capping data after a certain threshold. For UK and US SIMs, Réunion is considered an international roaming zone, incurring standard, often high, 'Rest of World' rates. CoreESIM offers a dedicated local data profile, circumventing the complexities and potential costs associated with traditional roaming.