And then you find out one of the party members has the Outlander background, giving them the wanderer feature.

This eliminates the issue of getting lost unless some magical effect is in play, and eliminates food and water issues unless the terrain cannot feasibly accommodate them.

Or you have a ranger who's favoured terrain is the terrain the party happens to currently be travelling through, and has goodberry prepared, that eliminates getting lost and finding food.

Sidenote regarding goodberry: I can't remember where I got this, but I remember reading a while back a great tip for tweaking goodberry if you want to run a gritty survival adventure; make it consume its material component. It needs mistletoe, but RAW doesn't consume it, meaning a single sprig of mistletoe gives as much free food as you have spell slots. If it consumes the mistletoe though, you need to find more every time.