It depends on your kids. Mine balked even at chatting about the tours and info sessions more than for ~5 minutes or so in the car afterward and would have considered taking notes or keeping a spreadsheet way more involved than they wanted. They wouldn’t have even wanted to read one I kept for them later. But other kids may be cool with it.
My overall impression is tours before admissions are overrated. We did a ton of tours for the first kid to at least try and narrow down whether they wanted big, middle or small, urban, suburban or rural, etc. It was useful in determining he didn’t want urban and applied to no urban schools. Beyond that he felt a lot of the schools blended together and most of the info was redundant. I enjoyed it more than he did. Having sat in many info sessions, most of them said the same things even when telling you what supposedly made their school unique (it was comical how not-unique their unique things were).
Almost everything can be found on school or third party websites and most schools have elaborate virtual tours now. So if your kids legitimately wants to travel and walk around on the tours, awesome, but if they are doing so because you nudged them I suggest letting it go. The reality is you’ll have a chance to tour or attended accepted student events after acceptance but before commitment and those tours are way more satisfying and relevant because the kids know it’s a choice they have the power to make and usually are laser focused on a couple schools at most by then. And it’s more fun to tour something without the "would I get in here’ over their heads.
(FWIW, my third kid, a HS junior, has banned all tours. He wants to do zero of them before acceptance and so far refuses to commit after acceptance. He tagged along on a few when he was much younger but has zero interest in touring before he applies now.)
On that note, if you do tour, I suggest steering away from the reaches as much as possible and focusing on matches and safeties. It’s hard to get excited by safeties when they’ve toured amazing reach campuses and the point should be to find achievable schools they can get enthusiastic about.
All that said, from my dozens of former tours, I’d suggest a couple things. First, try to plan around eating in one of the school’s cafeteria’s if possible. In the summer and during breaks college breaks this may not be possible but it’s always worth asking and pretty much every college will let parents and prospective students pay to eat in their cafeterias when open. Not the food court with chain fast food on the bigger campuses, but the real food they would get with a meal plan.
Second, ask about transportation options. Even if you plan to let your kid take a car, not every college will let Freshman bring them. And colleges are wildly uneven about providing group transportation options to/from major transportation options and have inconsistent access to Uber, etc. When we were touring NE LAC’s, so many of them proactively mentioned providing buses to NYC or the airport that we took it for granted. So when #1 went to Bowdoin it was surprising when the campus provided absolutely nothing and he had trouble finding Uber-like options from campus (not enough volume to reliably originate from Brunswick; getting back was easier). He eventually ended up with friends who could give him rides to/from their nearest airport but Freshman year was rough.
Good luck.