Advice
One piece of advice that I would share is being 100% committed to a job before going into it. Whether you are applying for an internship, summer job, or a full-time position, commitment is key to your success in that job. Working a summer job means giving up (most) of your summer vacation. You can expect to work between 30-40 hours a week if it is full time, which takes a chunk out of your free time. Make sure you are 100% willing/able to commit to such hours.