Setup is only part of the equation. The displays need to be constructed, the lights need to be sequenced with the computer. Old strings need to be tested and repaired, as do old displays. Some of this work happens in the spring and summer when few people are even thinking about Christmas. We start the actual setup in late October or early November, starting with the lights in the trees and other things that aren't so noticeable, then as Thanksgiving draws closer we work for hours getting everything else out. We try to get it done on evenings and weekends, but if necessary, a day or two off work can help get things finalized. We don't have a grand total of hours, but it's a bunch. And then as soon as January 1 hits, regardless of the weather, it all starts coming down, which takes a lot of time too.