Pros
I cannot point to the pay, benefits or working conditions as pro's because they are all pretty terrible, recruiting lies to and misleads people in order to get fresh faces in the door to offset one of the highest turnover rates of any company. If I had to point to one pro, it would probably be the availability of part time shifts that work well for those who are going to college full time as well as the fact that the pay is at the top of the scale, when compared to other part time jobs like fast food or coffee shops. It is the bonds I have formed with my coworkers as well as all the wonderful people I have met, that have made the job tolerable and keep me excited to come back. I highly suggest starting as a part time employee, if you like it there are plenty of chances to move to full time or increase your hours.
Cons
Imagine the worse manifestations of every negative aspect you have ever encountered at work and that is your day to day reality working at Amazon. In less than one month at the new DSE5 plant in Renton, I have witnessed promotions being granted based on favoritism, hostile work environments, I have had a driver attempt to fight me by getting in my face and I have been consistently threatened by management. It is clear that in a market which is being constantly flooded with desperate entry level workers from abroad, Amazon views their workers as glorified slaves. If you are not capable of meeting rigorous time demands or unwilling to tow the line in an increasingly difficult and hostile work environment, then you will become another nameless statistic and nobody will ever even notice that your gone.