The media will not be allowed into the wedding of Prince Charles and Camilla Parker Bowles at Windsor Guildhall.
The wedding is set for 8 April
And there will be only 30 people present to witness the heir to the throne marry for the second time.
The prince's household said it was always intended that the ceremony on 8 April would be a "personal occasion".
The private nature of the ceremony contrasts with the prince's last wedding in 1981, to Diana, which was watched by up to 750m people.
Prince Charles' wedding to Mrs Parker Bowles has proved controversial so far, with much media coverage of legal objections to the marriage as well as the Queen's decision not to attend.
The prince's household was forced to move the venue to Windsor Guildhall from Windsor Castle.
A spokeswoman for the prince said: "It was never intended that the civil ceremony should be televised as it was always planned to be a relatively small, personal occasion."
It has not yet been announced whether the church blessing in Windsor Castle that follows the wedding ceremony will be open to the media.
Despite the Queen's absence from the wedding ceremony at the Guildhall, it has been reported that Prince William and Prince Harry will attend.
The marriage plans received a boost last week when Registrar General Len Cook dismissed 11 objections that the wedding was unlawful.
The law has previously been interpreted as saying senior royals cannot marry in a register office.
But the government and Mr Cook believe the law has been wrongly interpreted and that the Human Rights Act means the wedding would be legal.