The idea that analyzing the stress of vacation preparation, where packing is more stressful than checking documents, would be a simple part of the investigation into the timing of document verification lacks discernment regarding what truly matters.
A missing or invalid document can ruin an entire trip, which is a much greater impact asymmetry than forgetting your toothbrush.
My friend recently missed his flight to Argentina because of an expired passport; the stress related to the luggage was then completely insignificant.
We must focus on what allows reaching the peak of efficiency, not just on "good enough," to ensure the trip takes place.