Prince William and Kate Middleton are on "cloud nine" after announcing their engagement and have already given royal aides a list of possible wedding dates and venues.
The couple spent part of the day discussing their marriage plans with officials and "all options are on the table", a St James's Palace spokesman said.
Aides will now consult with the Queen, senior royals, Miss Middleton's parents and others before reporting back to the prince and his fiancee, who will make the final decision.
The full cost of the wedding will not be known until major elements such as a venue are decided, but the spokesman stressed the prince and his bride-to-be were conscious of the country's economic situation.
The spokesman said: "They are still very much on cloud nine and are still enjoying the happy moment. They are enjoying talking to friends and family and enjoying one another's company and showing their commitment to each other publicly."
Staff from the office of the Lord Chamberlain - the senior official of the Royal Household - will be involved with planning the wedding.
Possible venues are St Paul's Cathedral, where William's parents the Prince of Wales and the late Diana, Princess of Wales, were married; Westminster Abbey, where the Queen's marriage ceremony was held, or even St Clement Danes, the RAF's main church in central London, as the prince is an RAF Search and Rescue helicopter pilot.
The couple are thought to favour a March date for their big day but some time in the summer may also be picked.
The policing bill for the wedding, to provide security for the public and guests who could include world leaders and royalty from across the globe, could run into tens of millions of pounds.
Miss Middleton was later pictured at Westminster Abbey as she considered it as a prospective wedding venue. A St James's Palace spokesman said: "Miss Middleton paid a short, private visit to Westminster Abbey in order to be able to consider it as an option. The couple wish for a little more time to be able to consult family members and make a decision for themselves."