Kate, 38, and William, also 38, spent the midterm break with their three children, Prince George, seven, Princess Charlotte, five, and Prince Louis two, on the Isles of Scilly. The Cambridge family are said to have stayed in a four-bedroom cottage on the island, just over 20 miles from Cornwall.
Speaking to The Sun, a vacationer said: “We barely noticed at first as they seemed like a normal family on vacation, determined to be alone.
“The place they were staying was quite modest and certainly not extremely luxurious.
“We couldn’t help but think about what the weather might be like in California, but it pays to vacation here in Britain.”
According to the official Isles of Scilly tourism website, the Isles offer a “simpler, gentler and more peaceful” quality of life.
This isn’t the first time Kate and William have taken a trip to the isolated British island, the couple visited the island in 2016 and again earlier this year.
The couple and their three children embarked on a summer getaway to the heart of beauty in July.
Only five of the 140 Isles of Scilly are inhabited with a population of just over 2,000.
Prince Charles owns a large portion of the land and a third of all the houses through the estate of the Duchy of Lancaster.
The island also has fond childhood memories for Prince William, who was taken there by his parents in June 1989.