I definitely agree with you! While I didn't stay overnight in my college because of the date I chose, I found touring that campus and others to be a great experience because it kind of hits you a bit more, if that makes sense.
One piece of advice I can give you is go with your gut. I toured two schools, the school I am at now and another one. Even though I LOVED the school I am at now, I originally committed to a different school because it was a private school and I kept hearing the education was better, blah blah. Long story short the school I committed to screwed me over and I'm at the school I loved anyway and am doing great haha. The moral of that story is go with your gut, because it won't steer you wrong! There might be that one school that "speaks" to you for one reason or another, so it will be useful to listen to those feelings.
I am so glad that going to this make it less scary for you overall and that you're even able to cross off some fields from your list! If you need any advice about actually starting school feel free to ask!
I like making sure people's first year goes smoothly, because it really is an awesome experience.