Pros
It's typically been a stable operation offering interesting work and a better-than-average paycheck for journalism. When things are going poorly elsewhere, the AP is traditionally doing OK (and vice versa; when things are going well elsewhere, life isn't so great at the AP). The company has done a good job of moving to a digital world and isn't in as bad a shape as many newspapers, but it still faces some real problems in the long run. There are a lot of great plans, but they're seldom followed through. And depending on the supervisor, the quality of life arrangements can be quite excellent.
Cons
Unambitious, cookie-cutter, vanilla journalism at its worst. Like a lot of upper management, buzzwords and changing plans of the month are endemic. Change is good, but not when it's just change because we don't know what else to do.