It's more than that. The players come up and chat with you, thank you for coming. The coaches do the same. And you feel as though you are getting a glimpse behind the scenes (which you are, in fact).
I had a great time the one time I got to go. It was much more fun than I expected, and interesting too. I might not want to watch a high school team practice, but a high-level D1 team in an environment that's welcoming to fans? I'd go again in a heartbeat.