I feel like background features are a little more "final" than normal feats. Take for example the Outlander features Wanderer.
You have an excellent memory for maps and geography, and you can always recall the general layout of terrain, settlements, and other features around you. In addition, you can find food and fresh water for yourself and up to five other people each day, provided that the land offers berries, small game, water, and so forth.
I'm really confused as to what this means to gameplay. So if he can "always recall the layout of terrain", does that mean he can skip checks for getting lost? Can and should the DM just decide when and how this applies?
In my situation, I'm playing Out of the Abyss, and wondering if "and so forth" includes stuff in the Underdark. Which is nothing like the things listed. Does it apply anyway, letting him auto-succeed on foraging checks? Or does it like not apply at all.
I'm sure these situations come up a lot with background features. Because they're all so generally applicable and don't involve rolls. As a DM, how should I deal with these features when I feel they don't super apply, or maybe just don't want them to?