The Wiltshire palace was built with the purpose of being a vacation lodging to the royals. It used to be their favorite destination and they would even hold some parties and galas there. However, in the recent years, the royal family would choose other estates or even travel overseas for leisure, Wiltshire having seem to have lost its charm.
Thus, when the royal couple selected the said palace for their honeymoon, all the household employ were in a panicked frenzy of cleaning, refurbishing, and even re-training the staff, to ensure that they would be able to provide utmost service to the newly married royal couple.
That was not to say that the staff was troubled. In fact, they were thrilled. To be given the chance to be of service to the most beloved royal couple to date on their honeymoon was an honor they were all looking forward to.