I worked for a few years for an electronics manufacturer. The CEO was coming for an official visit, and we got much the same BS from the muddle management ahead of the visit: there was to be a big effort to present a management image of efficiency. Cleared desks, ongoing repairs to be hidden, everybody in smart dress etc etc.
CEO turned up in casual dress 2 days before the official date. Had the receptionist let him in unannounced. He wandered thought to the production floor and just started chatting to the techs. It was a couple of hours before the management even found out he was in the building.
Most effective way of really assessing what the local managers were trying to conceal from the big cheeses. He knew that any 'surprise' visit would leak out, so he his surprise visit with an official visit announcement.