Pros
Weta is incredibly organized. They do some of the best work in the industry, and work on some of the most amazing projects in world history. Everyone is really friendly and professional, and great at what they do. They're very conscientious and make a concerted effort to treat their employees well. Generally, I was never overworked while at Weta.
Cons
It's nearly impossible to make any meaningful impact on this company without 1) years - even decades - at the company 2) working on site in Wellington (I was working remote).
Practically speaking, nearly all wetafx employees are machine operators.
While I honestly admire Weta, their organization, professionalism, culture, high standard, friendliness, etc. This was probably the least fulfilling position I've ever held at any vfx company. But that's likely because of my sorta 'overly-ambitious' personality, and the covid/remote circumstances.