Pros
There really are none. If you are a glutton for punishment go for it. It was by far the worst working experience of my life and I am so glad I left. I had always worked for smaller, entreprenurial type companies where there was real opportunity if you worked hard and could produce. This culture does not exist at Fidelity, at least not in the role I was in. They do have decent benefits so that would be a reason to work there and if you are looking for P/T you only have to work 30 hours per week to be eligible for the benefits (80% paid by Fidelity). They also do have the option of working 4 ten hour days or even 3 ten hour days if you are so inclined so that is something that may be appealing.
Cons
Worst job of my life. Long hard days that are incredibly boring taking call after call and answering the same four or five questions over and over. They micro manage you to the minute (literally) and tell you when to eat or take a break. That might appeal to some but for me that was the first time I had been in such a repressive position. I felt like a slave. And the compensation is terrible. I made more in my first year out of school ten years ago than I made at Fidelity and I am fully licensed (Series 6 and 63). I mainly took the job out of curiosity. I was new to the area (NC) and had never worked for a huge company before so I wanted to see what it was like. Thanks to Fidelity I will never again work for a company with more than 100 employees. To recent college grads......trust me....there is much better opportunities out there and I would run, not walk, from any offer that Fidelity makes you. I had never been miserable in my life until I worked with Fidelity and am so happy that I left.