The Voyage of the Dawn Treader held its world premiere on November 30, 2010 in London at the Royal Film Performance* in Leicester Square. It was the first time the Royal Film Performance was screened in Digital 3-D and the second time a Narnia film premiered at the event, the first being The Lion, the Witch, and the Wardrobe in 2005. The premiere was attended by various personalities, including Queen Elizabeth II and Prince Philip.
*The Royal Film Performance is a charity performance of a British film which is attended by members of the British Royal Family. The proceeds from the evening's entertainment are donated to the Cinema and Television Benevolent Fund, a charity which offers financial support to people from the film, cinema and television who encounter accident, illness, bereavement or unemployment.
The tradition was started with A Matter of Life and Death in 1946 and has continued every year since then.
via wiki
