My first ever job was working as a cart pusher at a Walmart supercenter. I naïvely choose to work two long shifts in a row not realizing how much walking that is. Every shift would end with me having open blisters on my feet and I eventually just stopped showing up after a few months because I contracted cellulitis from having so many blisters.
On top of that management was very rude and unreasonable. Despite it being a supercenter, I was often the only person scheduled to work, especially on sundays, meaning I would have to deal with the after church crowd by myself. Usually I would show up to work and carts would be strewn all across the parking lot and none would be in the vestibules since no one was there to do carts until my shift started at 11.
Customers would yell at me to work faster and management would get upset with me since they were getting complaints too, even though it was their fault for having one person do a job that needs multiple people doing it.
Also some people would use the parking lot as a trash heap. People would come by and dump their broken junk that they couldn't put in their trash can in the parking lot instead of paying to dispose of it at an actual disposal site.