The best thing about the process was the admin/coordination from the human resources side of the house and the initial recruiter. The interview is worth going on just to see the Amazon fulfillment warehouse.
I didn't care for any of the operations managers I met during the interview and really thought the position was about two levels below where I should be working post MBA.
People here are awkward and don't really seem to care about their employees under them, I actually dared to answer a question outside of the star format and was rebuked by the interviewer. This isn't a place for creative or entrepreneurial people.
You want the job? Just tell them you are obsessed with process improvements, make up metrics for every single task you have had in your past career and repeat every answer in the STAR format.
For the case study expect them to change the expected rate for station A from 150 to 120 halfway through your shift. You should then adjust your employees from B to make up the difference and justify your shift due to packing station A being the priority and you won't have enough packages coming from pick if you shift labor from there.