Diving holidays have a rhythm—long surface intervals to soak in the day, quiet...

https://dlf-ne.org/how-to-keep-your-tablet-useful-on-a-dive-trip-with-no-signal/

Diving holidays have a rhythm—long surface intervals to soak in the day, quiet evenings spent rinsing gear and swapping stories. One tip: download movies or books before you leave, since WiFi often drops once you head offshore