You can't refill bottles at wells. That i know. Have not tried at ponds and not even seen any pumps yet. And fluid containers are more rare than weapons so far. But patience. Alfer dudes.

Specially very visible when upper floors because most time you point down and everyone else are below you then. So vote for this issue. Patience ppl tho...

No matter how much you drink or eat, you'll get fainted due those same things. And not ever wake up after that but that you already know. :)

Happened to me when i climbed to a train cart(choochoo).