Realize what the general tours are: led by vivacious students who are tasked with selling the school. Just like any salesperson. I have been on tours where a "typical" dorm room was the on the tour; at S's school, if a "typical" dorm room had been shown, most would have gone to another school. So, the question is how to extract decent unbiased unvarnished info.
If, for example, your tour guide is an athlete, snuggle up to the front and just make "friends" asking about his/her typical day, prof availability (specifically for athletes who may not be able to make office hours), what are the majors on his/her team, what are the job prospects for athletes, etc.
For the most part, the tours allow you to get a feel for the expanse of the campus, basic requirements for admission, and other raw type stats. As others have noted, most of the info is freely available on the web.
For a few schools - for unhooked applicants - "demonstrated interest" is an admission element; a tour demonstrates interest for those students.
To me, the most important part of these tours (we did dozens over time) was getting the kids to figure out the differences in schools.
I assume you will be meeting someone from the baseball staff (the UV part of your post). Ask that person your pointed academic questions - especially the majors of the juniors and seniors (don't let them snow you with freshman and sophomore majors), the schedules, study requirements (e.g., mandatory study tables), faculty liaisons, and the current jobs of the last two classes to graduate. (Every good coach will know what his recent graduates are doing.)
I feel this is the part of the interaction with the coaches where the parents are the drivers of the bus; these are all non-baseball issues which most kids aren't interested/prepared to ask and understand the responses.