What are some cool things a LWer can do at Yale, Brown, and UChicago?

I almost never found it cliquish, which is different from what I've heard of other elite schools. People are either notably shy or willing to talk to anyone, anytime, about their favorite intellectual topics. (I guess what I'm saying is that the UChicago autism bell curve is a few standard deviations to the right of the usual one...)

Another UChicago alum. FWIW, my experience as an undergrad was that there wasn't all that much social mixing between the undergrads and the graduate students. I'm sure it occurred some, but the difference in life stage between those two populations was sufficiently large that mixing did not occur naturally. My impression was the grad students were aloof from the undergrads, not that the undergrads were hostile to grad students (undergrad hostility would surprise me, since many undergrads at UChicago thought they would be graduate students some time in the future).

Most student groups I participated in were overwhelmingly undergrad, such that a graduate student would stand out. But I mostly participated in academic competition groups (Mock Trial, Parliamentary Debate) that wouldn't have allowed graduate students to participate in the actual competitions.