You can view statistics of the most common wedding dates in a few places. The website AppilyWed offers a list of the 5 most common wedding dates. Wedding Industry Statistics also offers a wide range of wedding related statistics including information on the most common wedding dates.
No, dates do not have to give a gift to the wedding couple. Your date does.
I Dream of Nene The Wedding - 2013 The Wedding was released on: USA: 27 October 2013
The Wedding - 1905 was released on: USA: May 1905
Whose Wedding Is It Anyway - 2003 Wedding Warriors was released on: USA: 26 May 2009
Whose Wedding Is It Anyway - 2003 Wedding Survival was released on: USA: 12 July 2010
The Wedding Camels - 1980 was released on: USA: 1980
The Pigs' Wedding - 1990 was released on: USA: 1990
The Wedding Planner - 2012 was released on: USA: 2012
Blood Wedding - 2014 was released on: USA: 2014
Jenny's Wedding - 2014 was released on: USA: 2014
My Teenage Wedding - 2012 was released on: USA: 2012
My Bloody Wedding - 2010 was released on: USA: 2010