I didn’t go on an official college tour, but I did visit two schools with my dad. Thank goodness he asked a waitress if there were dance clubs in town. Back then I loved going out dancing, and three years (I transferred as a sophomore) living in a place without a dance club would have tortured me.
A friend of mine, her son’s college has a great program for freshman where people from each major talk to the freshman each week about their field of study and opportunities for employment. I think if I were touring now, I would ask what kind of guidance or information is there for learning more about majors and how it translates into real world opportunities. If companies interview seniors on campus? Stuff like that.
If it is a big campus you can ask about public transportation. If you have a car know some schools don’t allow freshman to have a car, and you would want to check about parking.
I would recommend seeing the dorms and eating in a cafeteria. Although, I didn’t do it when I visited. My campus had basically two styles of dorms, ones that had bathrooms down the hall, and one that were two dorm rooms connected by a bathroom in the middle. Usually each dorm room had two people in it. I recommended the bathroom down the hall unless you tend to wake up to pee three times a night.
Ask about campus life, what percentage live on campus. Security in the dorms, rules about people staying overnight, or, whatever might apply to you in that way.