I went to the residency fair to get a better feel for programs and try to figure out which ones I was interested in. I brought back lots of their handouts and went through most of it back at home.
I certainly didn't take any CVs and cards. It really isn't like a job fair where potential employers are looking for employees. The programs are there to answer questions and stimulate interest and applications.
I would, however, recommend that you sign the "I stopped by" list at each program that has one (that you're interested in, anyway). Some may use it to send you more information, some may toss it in the trash but, who knows, some may use if as an indicator that you have more than a passing interest.
BTW, I still love the long sleeved T-shirt I got from Washington University's program. I didn't even apply there (wrong geography for me) but I love the shirt. 🙂
Take care,
Jeff