Use Kindle here all the time on the
Caribbean coast of
Guatemala, but only via local
WiFi connections. Have never encountered copyright/distribution issues.
I have a wireless hub set up at the house with cellular based wireless service from TIGO. The hub allows multiple devices to share the TIGO connection (typically 2 laptops and a Kindle). Works great. This hub takes a 12v
power input at only 1amp so it is viable to use on the boat too (when in service range of course...which is quite good here and in Honduras).