Roamless does not provide a truly unlimited high‑speed data eSIM for the Cayman Islands. The plans that carry the “Unlimited” name give 3GB per day at full speed and then switch to a throttled speed of 1Mbps; the data is not unlimited at full speed.
Travelers who need a larger data allowance can choose a fixed data plan such as the Global Data Plan, which offers 50GB for 30 days at full speed, or a pay‑as‑you‑go credit. The Cayman Islands Pay as You Go options give 50GB, 45GB, 40GB or 35GB of full‑speed data with no expiry, and unused credit can be carried forward for future trips. These alternatives provide substantial data but are not unlimited.