I was working here for 10 years and in my stint I learn two things. Ad strategy is much much greater that marketing strategy and two- you can never say yes to a client when they want thing their way.
This took me a long way into advertising and I can say that I could successfully carve a niche in my career of 15+years. Today, JWTs culture remains an inherent part of my working style- being to the point and strategic. A great place to work( was by far the best during IPL days with Ashish Medhekar) and their creative team.