I agree with pretty much most of this statement, however I would go further and state this method is true for promoting projects to the general customer base/fans of the product (the end user if you will) to create interest. The "first shovel of dirt" ceremonies are for share holders, investors, local politicians et al. That's why its still ingrained in current corporate DNA and most likely will continue to be for the foreseeable future. My point to all this is, while it might not be front page, headline grabbing news for Disney to break ground on a new construction project in Florida, it certainly would be on the media radar if/when it takes place. So if the fans wanted confirmation that the Avatar project had started, media (old or new) stories for a ceremony like this would provide solid evidence that it was underway. Disney had a small media event for the Cars land dirt shoveling, I fully expect they would do the same for this project.