| Taking notes is a very good idea. Saying hello to the admission rep there is polite, but I didn't the first year I went to an MIT information session because I thought it was even more polite not to add to the crowd around her (Amy Perez) on behalf of a child in a lower grade at the time. The alumni representatives ("educational counselors," or "ECs" in MIT-speak) are very helpful to talk to, and I hope they go to these joint MIT et al. meetings just as they do to solely MIT information sessions.
Anyone who visits one of these sessions is strongly encouraged to post a visit report in this thread, and I welcome other suggestions about how to prepare for the information sessions. | 
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