I suspect we'll have to use an internet cafe at our ports of call, because it sounds as if satellite connections are not reliable. We don't anticipate having urgent need for a connection.
We did Asia a couple of years ago -- extended land travel - and were charged for connections at each and every hotel but when in South America last winter each hotel was free, and these were just 3* hotels. And when cruising around the Horn we used cafes at a couple of ports and costs were negligible.
Thanks for taking the time to reply.