Prince William and Kate Middleton have thanked well-wishers for the great affection shown to them in the run up to their wedding.
The heartfelt message begins: "We are both so delighted that you are able to join us in celebrating what we hope will be one of the happiest days of our lives.
"The affection shown to us by so many people during our engagement has been incredibly moving, and has touched us deeply.
"We would like to take this opportunity to thank everyone most sincerely for their kindness."
Photo: Mario Testino
The couple's words feature on the first page of the official order of service, published the day before their wedding.
Their faces smile out from its pages in a newly released photo, taken by Mario Testino, which is included, along with details of their marriage vows.
William will speak first, when prompted by the Archbishop: "William Arthur Philip Louis, wilt thou have this woman to be thy wedded wife, to live according to God's law in holy estate of Matrimony?
"Wilt thou love her, comfort her, honour and keep her, in sickness and in health? And, forsaking all others, keep thee only unto her, so long as you both shall live?"
Then the bride will be asked the same question.
Taking Kate's hand, the Prince will then make this pledge: "I, William Arthur Philip Louis, take thee, Catherine Elizabeth, to my wedded wife.
"To have and to hold from this day forward, for better, for worse: for richer, for poorer; in sickness and in health.
"To love and to cherish, till death do us part, according to God's holy law, and thereto I give thee my troth."
Kate will plight her troth in the same way.
Giving the only reading of the service is the bride's brother James Middleton. He has been given the honour of deliving Romans 12: 1-2, 9-18.
Twenty-three-year-old James will take his place at Westminster Abbey's Great Lectern and read from the passage which proclaims: "Do not be conformed to this world, but be transformed by the renewing of your minds".
It continues: "Let love be genuine; hate what is evil, hold fast to what is good; love one another with mutual affection; outdo one another in showing honour."
A St James's spokesperson said the couple chose the passage as "it spoke to them".
The ceremony will end with the procession of the bride and groom followed by the Queen's, as the happy couple travel to Buckingham Palace to begin the festivities.
Details of the hymns and pieces of music to be heard are also in the official programme.
The 28-page booklet will be given out to all the guests and be on sale to the public. A group of 60 Scouts and 80 Cadets will be selling it on Friday at locations in Green Park, Hyde Park, St James’s Park and Trafalgar Square.
Profits will be go to The Foundation of Prince William and Prince Harry