Princess Margaret and Princess Anne both took their vacations on the Britannia as well.

Unfortunately, this particular excursion was less than romanic for the newly-wedded couple, who were 33 and 19.

It was during this cruise that the couple discovered the ocean of differences between the two of them.

Princess Diana and Prince Charles

Indeed, a former aid of the princess confirmed the experience.

Furthermore,Reader’s Digestreports that the Prince had daily phone calls with his mistress throughout the entire trip.

If he went without his daily phone call, he would become tetchy and ill-tempered."

Princess Diana and Prince Charles

I thought, what a thick question.

And that threw me completely.

I thought, what a strange answer.

It traumatized me."

By day two of their honeymoon, Princess Diana said she had lost hope in their union.

A sad start to a heart-rending story, the pair’s honeymoon proved anything but romantic.