I was invited to an exploratory interview after my team and I competed in Brandstorm. Although our team didn't place, we were invited to submit our resumes after the competition. A couple of weeks afterward, I was asked to meet with the recruiter. Then, an online Digital Marketing Assessment Test. A month after that, I met with a Brand Manager and received a summer internship offer.
The first exploratory interview was warm and welcoming. Typical behavioral questions, as well as a few "brain-teasers/case-styled" questions at the end. Nothing too difficult, the recruiter was more interested in assessing my ability to quickly think and confidently articulate my thoughts rather than the answer themselves.
Interview with the brand manager was slightly more difficult. I was asked how I would market certain products, my favorite brands, as well as the types of working environments I thrived in, in the past.
Honesty, enthusiasm, and confidence are really all I can advise for future applicants. Based on my experience and that of others, most interviews seems to be dynamic and a little hard to predict. Just be confident, review basic marketing principles, and strive to understand the company's various brands, culture, and future strategies. Don't forget the STAR method. Don't forget to be yourself!