Last year's Bring Your Child To Work Day was a mess. It happened while we were consolidating buildings. We had movers, construction, infrastructure/wiring going on. It was a mess, and we were expected to handle business as usual.
When I originally started, we were in four buildings. They sold them all, and leased two of them for their own use. We had to have new offices built and new wiring (electrical & data) to accomodate the new sardine cans. My stepfather's company is in one of the other buildings and I have friends who work in the fourth one.