I'd say, always be prepared and willing to go outside of your comfort zone. My "social media" internship ended up involving a lot more than social media, and I got to explore mediums I had never explored before, and it was illuminating! I learned that film is a huge passion of mine. Bring your strengths full-force into anything, communicate often and openly, and don't be afraid to speak up for your ideas and passions, if you wish for certain things to be incorporated into your duties. You'll end up getting a lot more out of it if you advocate for yourself. ALSO, be prepared to deal with challenging people and situations and try to keep a level head through it all. Don't be afraid to ask questions and admit to your faults. Communicate, communicate, communicate.