How reliable is WorldESIM coverage on New Zealand's Cook Strait Ferry?

While traversing the scenic Cook Strait between New Zealand's North and South Islands, WorldESIM users will experience robust connectivity near the departure and arrival ports of Wellington and Picton. However, as the ferry ventures into the open waters and navigates the picturesque Marlborough Sounds, signal strength can become intermittent. We recommend downloading any necessary offline maps or entertainment beforehand for uninterrupted enjoyment during your crossing.