Advice
One piece of advice I have from this experience is to be willing to learn on the job and willing to work in a team who gives good feedback on your code. College classes can never fully teach you how software development will be in the workplace so being open to learning (whether it be a new programming language, frameworks, or how to do a code review) will be very beneficial in helping you get the most out of the internship. Also be willing to hear what others have to say about your code during a code review and be able to take that advice and apply it to make your code better.