As a former amazon driver....
.... I have to comment.
The specs idea to help you find the door, sounds awful, there app is actually brilliant, when a driver marks as delivered, that exact gps position is recorded, usually, that's the door or porch etc.
Sometimes, it can be out a little and you have to use your brain.
Package x of y, the app says take parcel, a, b and c. You have to scan the qr code and it won't let you progress to the next delivery until all parcels for that drop are scanned and marked as delivered.
Loading is done at the depot, there's usually about 15 big bags, and you load them in a set order, first in, last out. Inside the bags is the same, stuff at the top is to be delivered first etc.
Branding. It's rare that even an amazon van is driven by an amazon employee, most are self employed, making 130/day and work for a DSP, delivery service partner. Even in an amazon branded van.
You're not given a uniform, you're told to wear sensible clothes. I had an amazon jacket but I had to ask and only because it was winter.
Yes, we do drive literally two houses down, we are told every second counts so that 30s walk back to the van means you're losing time, besides, unless you're in a dead end, chances are, you're heading one way down that street so may as well take the van.
On average a driver is expected to work 9 hours and deliver around 250 to 300 parcels. There are no toilet breaks, lunch breaks and you're expected to be able to wangle a huge van through streets, fords, villages, cities, business estates, farms, who knows what else, so yeah, the odd dint is to be expected.
Drivers in some DSPs have to video their van before and after each shift and send to their managers, reporting damage etc.
Helped me, someone said I'd hit their car and pointed to a dent on my van, I happily whipped out my phone and showed them that dent was there 6 hours ago.
Also note that you're not supposed to have other people in the van but its so much easier to have someone be able to run in and drop the parcel while you're driving, waiting or sorting the next parcel out.
Finally, cars vs vans, vans are the normal deliveries cars are flex, ie. They pick up and deliver less but it'll be the same day order stuff.