One thing to consider is whether cruise ships will upgrade the "local area network" to take advantage of a larger pipe. "Local" meaning the numerous (presumably dozens of) WiFi Access Points that thousands of us will have to connect to (plus some number of wired connections around the ship), and then pass data through -- and then the switches and router(s) that process all the traffic to and from the Access Points, and simultaneously to and from the "big pipe in the sky" (satellite feed). Passing gigabits of data per second, for just one connection, is a HUGE thing. In fact "HUGE" doesn't even begin to cover it. In fact even for a techie like me I am utterly amazed, even flabbergasted, that it all actually works.
But bring it on Elon, I'm "wired" and ready to go.