Count me in for R2!
I visited Haas in late October. For me the best part was the opportunity to meet a lot of students. Everyone seemed smart, nice, and genuinely interested in providing info on the school. I felt like they were giving an honest assessment of the school, etc., not just the party line.
Not that it necessarily means much, but the other applicants were also really friendly and people I could imagine having a beer with... at other visits I have not felt that way!
The downside for me was through the day I heard several students say that a drastic career change 'wouldn't make sense' to the admissions committee (and in general). As a career-changer that wasn't very encouraging to me, but I'll just put it all in the essays and leave it to the adcom.
Good luck everyone!