I suggested earlier that we have Admin input Title and Summary with Date and Time. You didn't like that idea. How about leaving those fields blank? That way they don't show up with wrong info. Being blank would suggest not that something is wrong, rather that something is missing that needs to be added.
Take a look at the Master Event and all its Days and Child Events. They all have bad improper data because we cloned the Main Event. They should not be clones. They should be stand alone Days, Events and Breaks with their own Titles, Summaries and Descriptions.