Can confirm. Was a waiter for about 6 months. Everyone there at the very least smoked cigs, weed, drank, and got completely shitfaced almost everyday after the shift. I imagine for cooks they could do it during their shift. Heard meth and crack are very popular too but I never seen it myself.

I think it’s the combo of the stress, the low salary, and high turnover. The ones that stay develop coping mechanisms. I imagine a few get lucky and get to work at fancy places too.