I love all this 'running your life around your toddlers (sic) sleep'
Some of us have no choice! DD has one nap a day now.
It doesn't matter how long or short that nap is- she has one.
If she's woken after 5 minutes there is no way on earth I will get her down for a second nap. Meaning she spends the rest of the day grumpy and grizzly, will sleep appallingly that night (she is often up for 2+ hours in the middle of the night if she is overtired), then is grumpy the next morning too. It can take her 2 days or so to get back to her usual self.
A fairly recent development is that she will only take that nap in her cot, not in the pushchair, car, or even the sling these days. She might drop off, but will wake as soon as the movement stops, so see previous comment.
So yeah, I do make sure that we are at home in the middle of the day at some point so DD can have her nap. And I do make sure the place is fairly quiet, meaning we have TV on and background noise but I won't Hoover upstairs or make any sudden noises.
I'd love to have a baby like SIL, you could jiggle the pram and she'd fall asleep and then you could leave her. If she got too tired, she'd sleep longer the next day.
But some babies just aren't like that, through no fault of our own!