Consider this: Visiting in person is completely overrated.
You are flooded with a bunch of essentially random information that is really vivid and seems critically important. But really all that’s happening is that you are reacting emotionally to information that is incomplete and misleading, and you are constructing what are essentially fantasies about what it would be like to attend that institution that say more about your psyche than about the university in question. You completely miss a sense of the range of possible experiences there, and how you and people like you adapt to the institution to maximize what’s good about it and cope with what’s annoying. (Every institution has plenty of both.)
You may not like your tour guide. Or you may love your tour guide. Is she typical of students there? What does “typical” even mean in the context of a university? You may not like how the dorm rooms you see are set up, or the bathroom arrangements? Are all the dorms like that? Are the students in the “bad” dorm really unhappy, or did they find that after a few weeks they didn’t mind the dorm as much as they thought they would?
You can probably learn most of what you really need to know to make an intelligent decision by reading the catalog carefully, comparing COAs, talking to students and recent alumni online, and doing some internet research on the reputation and quality of the departments in which you are most interested.
Of course, once you have visited a few places, unless you completely hated all of them, it may be hard to choose an unseen campus over one you have visited, precisely because you have so much more seemingly relevant information about the place you have seen. That doesn’t mean you are making a high-quality decision.
(My experience with this: I chose my college notwithstanding that I probably liked its campus least of all the places I visited. There were too many good reasons to go there that had nothing to do with what it looked like. That proved to be true. In addition, surprise!, decades later, I go all gooey with nostalgia about the same spots I thought were awful when I first visited.
I also chose my graduate school sight unseen. It had a reputation for being really beautiful. I got there, and I couldn’t believe how much I disliked the whole physical plant! Plus, lots of things I took for granted in my college were different there, and not for the better. All of that lasted a month or two, but ultimately the reasons why I chose to go there proved absolutely right. I couldn’t have made a better decision. And I still hate how it looks.)