We started with the info sessions and tours - and they start to blend together - especialy the info sessions. They’re all the same - i know others disagree but my kids were bored and it turned them away from wanting to do more.
I also combined visits with vacations - at the end, my daughter didn’t want to go see the finalists again but needed to - so it was half beaches (various) and then days of campuses. The last trip was Beach, Florida State and Florida, more beach, C of Charleston, U of SC, and she decided UGA was out so skipped that.
For us, having all the info sessions/tours cancelled turned out a blessing.
Last Summer, My daughter and I did 11 schools in 4 days - all, except Elon, self toured. Elon was a 15 min info session (thank goodness) and private tour. yes, campuses were empty but we always found someone to talk to and you could see the architecture, town and surrounding areas, etc. In fact, we bumped into a wonderful professor at W&L who spent 30 mins with us - was just lucky. He was in the area my daughter wanted to study.
Normally in 4 days you’d see 4 or maybe 6 schools - so this was lucky and our preferred way. After all, if you really want an info session, most have them online. And some even pre-recorded.
I think in general, trying to spread it out is best or they get bored. In our case, my son was overwhelmed and uninterested - just bored. And my daughter couldn’t see enough schools.
So depends on the kid.