Memememe I doubt it, once Prince Harry and the Princesses Beatrice and Eugenie went to Switzerland, then the Princes William and Harry to Spain, it was clear the whoever wrote that austerity don't spend article claim made it up.
This will probably be their 'pattern' of holidays, rather than what their old folks usually do, i.e. Her Majesty in Sandringham until February of each year and so forth.
Some royal correspondents agree with Rebecca English, suggesting that as soon as PW finishes his RAF/SAR duty, which he probably was done today, he's off to Mustique, although they never stay more than 1 week, so in my view rather short. They also usually take 1 week around Easter to the piste. And 1 week during the Summer to Mustique again -- although I doubt they will be going, they've got the Jubilee around June, Olympics July and August and around Autumn the South Pacific Royal tour in Celebration of QEII Jubilee.