Is roaming free in Martinique for our group with European (EU) SIM cards?

It's a bit more complex for Martinique. Since it's a French Overseas Department, EU 'Roam Like at Home' rules *technically* apply for EU citizens. However, many European carriers impose 'Fair Use Policies' with data caps or even throttle speeds in overseas territories, which can be frustrating for a group. For travelers from outside the EU, roaming costs will definitely be high. With Triply, your entire crew gets straightforward, reliable data in Martinique, avoiding any unexpected roaming surprises or throttled speeds.