I think that's true for smaller colleges or private colleges. I know Trinity mentioned going for the open house and then scheduling a one on one interview as something that can boost your profile. Conversely, Willamette University's person said whether you visit or not had zero bearing on if they admitted you or increasing your chances since they mostly get out of state people applying and it's not always easy for people to get there. Maybe Trinity is different because it's highly sought after in this state thus being a lot more competitive. I can't remember if Colorado College made it a big deal or not to visit.
I would say sign up for emails from them to show interest and also attend any traveling college fairs if they do them. I know Willamette scanned a QR code on my daughter's phone when we talked to them at the small college fair. Maybe that was to send her more info or record that they spoke to her? I think getting on the email list is a good idea as we've gotten emails from places she's not going to apply with like University of Denver that offered waiving the application fee if she applied.
Which college is this for?