Green,
I can't speak to the experience in Europe, but I took the June 2010 test at Yonsei University in Seoul and I found it to be quite pleasant, relatively speaking. If I had to hazard a guess, I'd say that roughly 100 students showed up, and we were all ushered into smaller (and mercifully air-conditioned) classrooms consisting of roughly thirty desks. Moreover, the proctors paired off the desks so that each student had ample room to spread out if they desired. On the whole, the university did a nice job removing outside distractions.