the worst was when I had to come to Dallas and go to HQ where we were at on the 4th floor of the main building, someone booked a meeting room in one of the other buildings and we had to walk across the walkway to it. I logged 3 mile walk to and back from just that meeting.
I'm envious of your full tour. You got a chance of a lifetime to see everything up close where most of us just get a glimpse if we are lucky.