unless something is relevant to the story, it is omitted
100%!
This is one of the things I found hardest to learn as a writer when I first started out. I come from a background of technical writing, so I had (and to some extent still have) a habit of writing for
absolute clarity. Nothing is worse than a manual or design that's ambiguous, but the core purpose of fiction is not the maximally-efficient transmission of information! It's
telling a story, and readers are extremely good at filling in or glossing over blanks that are not absolutely necessary for the plot. It doesn't matter whether your protagonist has 36D or 38E boobs or if they weigh 70 or 71 kg, obviously, but the same goes for the more dynamic content of your story.
If 2 characters get a bite to eat as a brief intermission between 2 more substantive scenes, you don't need to exhaustively account for every second they spend doing it. All you have to do is establish a reason for going (a growling stomach, a need for a break), the
core of the activity (describe if the food is good or bad), and the end of it (bye bye, see you tomorrow). Don't talk about them locking the door behind them as they depart from home, the route they take to the diner, or what their waiter looks like. Don't describe them poring over the menu, or indeed the brief bathroom break one of them takes... unless those details
enhance the story!
If they've been flirting previously, maybe they walk back from the diner arm in arm, and describing how the sunlight shimmers through the softly rustling leaves creates a romantic feel. Or maybe they're office rivals and verbally spar while waiting for their meal to arrive, but are then surprised to discover some common ground, which can serve as an early indication of a slow shift in their relationship. Or maybe while person A is in the bathroom, person B obnoxiously hits on the waiter, demonstrating to the reader how little B cares about their relationship with A.
(Note how in these examples, the "extra" details make the scene serve multiple purposes too; this is another trait of "good writing".)
Those musings aside, other things that don't happen much in stories:
- Getting dressed (for a normal day)
- Eating alone
- Grocery shopping
- Home cleaning