NEW YORK — Among the roughly 5 million visitors expected in New York this holiday season, at least two are certain to get the royal treatment: Britain's Prince William and his wife, Kate. They are due to arrive Sunday for the first trip either has made to the United States' biggest city, and William also is set to visit the nation's capital for the first time. Properly known as the Duke and Duchess of Cambridge, the royals are making their first official visit to the United States since a 2011 jaunt to California. (William made a personal trip to a friend's Memphis, Tennessee, wedding this May with his brother, Prince Harry.) The duke and duchess have been looking forward to a three-day trip involving issues "close to both of their hearts," a spokeswoman said. Kate is expecting their second child in April, but the royals' schedule is packed with plans ranging from paying respects at the National Sept. 11 Memorial and Museum to taking in a Cleveland Cavaliers-Brooklyn Nets game. — AP