I loved the real world application of the concepts that I studied in school. I was invited in to important meetings and see what I like in a manager and a work environment and full time and what I would not.
What I wish was different
Put your all into your work while you are there. Take advantage of the experience and what the company is allowing you to come into for the summer while you are there. Instead of looking at it as your summer job, look at it as this could be your career. What do you like and what would you change?