I have head too many times of prospective college students going to visit a college campus and limiting their tour to the athletic facilities and an interview with the coach- but never visiting the rest of campus? In fact I have known a few that went to visit only one or two schools. Even if you are offered a verbal, how can you truly make an educated choice with out at least getting a better idea what is out there? Books and internet information is great and there is certainly a LOT more info out there than when I was looking at schools way back when, but there is nothing like an in person visit. JMO
BTW- having now been on countless tours with both my kids- we have a running joke on what you see on every tour:
College Union(student center)
Library
Dining hall
A Statue
New Science Building
Sample Dorm Room(usually a "model" room"
Sometimes the athletic center(usually the student "work-out" area