According to the other movies and, I believe, the series, there are multiple Gatherings.  I think this was likely a change implemented after the first movie since the first movie created such a phenomenon.<br/><br/>I would like to have some setting (what city we're in) and world building occur so we know where our characters are gathering, exactly what the date is, and perhaps some buildup or rumors that our characters could investigate that may lead them to one another.