I've worked in a pizza place and known other people who have worked for pizza places, and none of us described it like a prison or felt the need to piss in a bottle.
No, instead they have a dangerous business model where they force their drivers to get to a location in 30 minutes or less causing them to weave in and out of traffic and crash in hopes of getting a tip. Much better than bottle pissing.
The what? That 30 minutes or less thing was outlawed in the 1980s, specifically for the reasons you cite.