Prince William has organized a secret honeymoon for his bride-to-be Kate Middleton.

The second-in-line to the British throne will marry his fiancee on Friday April 29 before leaving for a romantic vacation the next day and although Kate is hoping for a mix of adventure and relaxation, she won't find out the details until they depart.

A source said: "Kate wants to mix something active with the chance to put her feet up and relax.

"She also said she was keen to go somewhere hot, but would let William decide as a surprise."

A number of destinations have been suggested including the Caribbean island of Mustique which is a favourite of the Middleton family and South Africa where William, 28, proposed but the prince is now said to have booked a horse riding trek in South America.

The source added to The Sun newspaper: "Kate isn't supposed to like horses, but that's a bit of a myth.

"She has had a number of riding lessons since last summer, which could mean the idea of a pony trek is not that far-fetched."

Kate's parents will pay for the honeymoon and their daughter's dress as part of their 100,000-pound donation to the costs of the wedding.

Meanwhile, Kate, 29, is spending the remaining time before the wedding at her family home in Bucklebury, Berkshire, England, where she is relaxing by watching TV show "MasterChef."

A source said: "They're big fans of 'MasterChef' and sit with their dinner discussing it."