Prince William and Kate, Princess of Wales, are sticking to peculiar royal traditions during their upcoming stay at Sandringham House on Christmas Day. The future king and queen will spend the morning apart, thanks to an archaic custom where royal women and men spend the morning of the holiday apart since ladies presumably take longer to get ready for the day than gentlemen. For centuries, royal ladies have had their light Xmas morning breakfast delivered to their room, while the men gather in the dining room for a heavier meal. “On Christmas Day, the ladies generally opt for a light breakfast…