I agree that there’s no need to push a junior into making on-campus visits. But I also agree that once the list is put together, your daughter would be wise to make some visits if for no other reason than to demonstrate sincere interest.
Having said that, my son made no pre-application visits. He’d seen enough colleges and universities when in high school b/c of the travel schedule of his debate team. He’d spent time living in college communities because of my profession. So we did not push him at all. He was really very busy, especially during debate season. He got into several very fine colleges, including my alma mater which he visited with me on a summer vacation. The college he ended up attending (UChicago) is one that he never visited until after he’d been admitted. He did an overnight there on admitted students’ day, declared the next morning “This will do,” and the college search was over.
My daughter’s case was entirely different because she was looking at specialized schools (art colleges or universities with strong art programs), and was also concerned about the location. She did one massive swing on which she visited 10 colleges in 11 days – during June between her junior and senior years. Not the best time, but she learned a lot from that. (Some of those colleges were of more interest to her classmate who accompanied us on that tour, and who was more interested in theater than in art.) She also educated herself by attending pre-college art programs during two summers (School of the Art Institute of Chicago). I doubt that the college visits by themselves mattered to her admission. What was really critical was the quality of her portfolio.