On a somewhat personal note, I have a nephew in northwest Ohio who's a great Duke fan. One summer he and his family were going to the NC shore for a vacation and he wrote Coach K to ask about stopping in for a short visit. Coach K said sure, come on by. Not only did they get a personal tour of Cameron, they each got a really nice swag bag. I don't recall if Coach K was actually there (I think it was an Olympic year), but my nephew was incredibly impressed with the treatment they got.
I can vouch for this. I had a very similar story happen back in 2000. I was heading to outer banks for spring break and, being a lifelong Duke fan, decided to stop by Durham and get some pictures in Cameron. When I went in I actually found the team in the middle of a practice in preparation for that weekends Sweet 16 NCAA tournament game in Syracuse. My parents and I watched a bit, walked around the concourse admiring national champ trophies etc and eventually made our way down to court level.
After practice, not wanting to be a pest but also not wanting to miss the opportunity I asked Coach K for a quick autograph. He asked who we were and we explained we were huge fans just stopping through. He admitted he was in a hurry because the team was going from practice straight to a team meal and then they were loading the bus for the airport. But he said if we were willing to wait about an hour he'd be back and sign whatever I wanted and he'd have some time. At this point leaving was no longer an option.
After about 30 minutes people, fans and family started showing up to see the team off for the NCAAs. Coach K returned to see us, signed about 3 things but better actually sat and talked to us for a good 10 minutes about sports, school, being a fan from Ohio etc before introducing us to his wife Mickie (she and my mom got along great lol) and then even calling some of the players and staff over to chat with us. Met Wojo and Johnny Dawkins who were on the staff at the time. Both great guys. Even got a brief shake of hands, and wishing good luck with Chris Carrawell, Shane Battier and Carlos Boozer.
Saw them all off to the bus where Coach K turned and waved to me and said something like "Thanks for always rooting for us from Ohio. We'll need it this weekend"
One of the nicest, most genuine and totally unexpected and cool experiences of my life to that point. I was legitimately a nobody who shouldn't have even been there and yet in the midst of being busy and preparing a team for an NCAA trip and game he made time for me and my family. I'll never forget it.
He's the GOAT for a reason.