The company culture was absolutely amazing. Every employee was so welcoming and made the interns feel at home. I loved working with my fellow interns as well not only in my department, but across the company. CGI also held weekly "classes" with the various internal departments, that allowed us to understand the entire marketing process from start to finish. We were also able to shadow people within our department and sit in on client calls. As interns we were given many projects to work on and even given a client project that we had to present to the higher-ups at the end of the summer.
What I wish was different
I do wish it was a full time internship because unfortunately we were unable to accomplish some of the tasks given to us at the end of the summer due to time constraints. Our internship coordinating was very understanding though, and made sure we knew it wasn't a big deal.
Advice
Don't be afraid to shadow outside of your department! The weekly classes we had allowed us to explore other opportunities and i became interested in positions i never knew existed.