Pros
As an intern, I was trusted to take ownership of some great variety of projects and was managed and guided through them well. Management helped me maintain balance in learning / training and adding value. The internship program also provided an opportunity to learn about the company and get involved with the social aspect of being a Wrigley employee - be it meeting Duke Petrovich, volunteering, or going to a Cubs game. The office environment was also open, friendly, and collaborative. In general, it was fun working with candy products... lots of free candy!
Cons
Unfortunately, despite my good performance, there was not an opportunity to become a full-time employee... this may have just been timing. While it presented great opportunities, Wrigley was also going through some challenges post Mars acquisition in streamlining Mars / Wrigley efforts into one company, much like any company would at such a time.