Most better Marina’s often where you see the bigger power boats have cable run to the power pedestal
. However it’s usually up to you to establish service with the local provider. That ought to get you cable internet.
Marina is that way now but I have not used cable.
So far the issue with cell phones seems to be allowable data, it’s not very big and even if you go to the most expensive plan, it’s still not a whole lot of data.
You have unlimited, but only on the phone
, not if you tether a device.
Most other countries don’t have this issue, it seems to be a US thing and is of course profit motivated, for instance my hot spot limit in the Bahamas
was 300 GB a month, from Verizon’s most expensive plan I think it’s 1/10 that amount.