Pros
CI has an extensive training program and will hire individuals to be digital marketers even if they have no former experience. They focus more on what you as an individual can bring to the table and your potential to learn. Soft skills are a must. It's a very open and supportive environment, and everyone is happy to help you learn or collaborate. There's an excellent work/life balance and management is very understanding of needs outside work.
Cons
CI is a marketing company for arts organizations, mainly non profits. While working with these clients is inspiring, it doesn't pay well. I worked there only a short time so I didn't experience this myself, but I did hear several times that sometimes favorites could be played, leaving more lateral career advancements for some as opposed to the promotions they deserved.