Lots of great advice here, and I think your last list is really solid. I wanted to chime in primarily as the parent of another Junior daughter. We did our first exploratory trip last summer, in an effort to space the visits out and not make junior spring and senior fall quite so hectic with college stuff. So far our daughter has visited eight schools if you count walking around campus with her brother when we dropped him off at his school after Christmas break this year. We are prepping another (and hopefully last) big trip for spring break this year. Except for a day trip to Pittsburgh, where she visited Dusquene and Carnegie Mellon on the same day, we devoted one day to each school.
You are wise to focus on schools of varying size, geography and "vibe"at this point. In our experience, that first trip really helped our daughter discover what she perceives as important. Some of these things were not shocking to us as her parents, but then again some things were.
If your daughter is anything like my own, I would not advise doing more than one school a day. This is because the goal is to keep her engaged, and provide her the space and time to think about each school individually. We found this to be important because at schools my daughter liked she wanted to spend more time than just the tour and information session. Doing only one school per day provided us the time to do that. Plus, when your daughter takes one look at a school and says “nope” (which will likely happen at least once) this provides the freedom to do some relaxing things on that day. Go get a nice dinner, walk around the city or see a show. It made it a bit more like a vacation rather than a business trip, you know?
I would also say that you shouldn’t skip the information session, unless your daughter really isn’t “feeling it” at a particular school. While I agree with others that most of the information sessions are not helpful, a couple of them were. Unfortunately, you won’t really know which is which until you are there. My thinking is that if we are going to invest the time in going to the school in the first instance, might as well wring everything possible from it.
As far as the nuts and bolts, a couple ideas. The night before each visit, our daughter spent twenty-thirty minutes looking at the college’s web site. Mostly this was to give her a kind of mental orientation to the campus (from the maps) and to refresh her recollection about why we she was visiting that school in the first place. After each visit, our daughter took very brief notes on her phone, mostly a bullet list of likes/dislikes of that particular school. It was when she looked at these lists later that a pattern started to emerge, and we got a sense of what things were important to her, pro and con.
Good luck, and enjoy the trip!