There are a few modes to play in, if someone isn't keen on the hunger and thirst mechanics you can play without those, in Freedom mode. There is also Survival, with those mechanics, hardcore, with a single life and creative mode with no resource cost for building items.
My first run was in Freedom, and the second in Survival.
Good advice to avoid spoilers, unless you get well and truly stuck. Especially spoilers for locations and story elements. I said earlier that the game expertly rewards exploration, and it does. Everywhere you venture, each cave you decide to spelunk, every wreck you investigate yields something valuable. My starter advice is to have a Seaglide on speed dial as a crash fish evasion technique
Animals flee this hell, the hardest stones cannot bear it for long. Only men endure