Getting to learn about the different departments within the company. I was on a rotational program and so I was with a different department every week.
What I wish was different
I wish the internship was longer so I would be able to spend more time with each department
Be proactive ( don't' just sit around looking to be assigned tasks, ask people how you can be of help if you have time). Communication is also very important, especially when working with others in a group.