Royals Kate Middleton and Prince William's Boston Trip Details Revealed: Their 'Super Bowl' The Prince and Princess of Wales are "both extremely excited for the visit," which will end with a glamorous night out at the Earthshot Prize Awards By Simon Perry Simon Perry Simon Perry is a writer and correspondent at PEOPLE. He has more than 25 years’ experience at PEOPLE covering the royals, human interest and celebrity. People Editorial Guidelines Published on November 27, 2022 07:01PM EST Prince William and Kate Middleton. Photo: Alberto Pezzali - WPA Pool / Getty Kate Middleton and Prince William are all set for what staffers are calling their "Super Bowl moment." The Prince and Princess of Wales will arrive in Boston on Wednesday, and some details of their visit have been unveiled by their office. Their three days in the U.S. will end with the celebration of new ideas to solve the planet's issues, the second annual Earthshot Prize Awards Ceremony. Kate and Prince William, who last came to the U.S. in 2014 for a visit to New York City, are "both extremely excited for the visit," a source close to the couple tells PEOPLE. "They feel and appreciate the warmth and excitement of the American people for their return to the U.S. and are really looking forward to meeting as many folks as possible." Prince William refers to the Earthshot Prize Awards — which will air on PBS on Sunday, December 4 — as his attempt to provide some urgent optimism about tackling environmental issues and climate change. He and Princess Kate are "excited to be able to bring that to the United States and inspire people stateside and around the world through the incredible stories we are going to tell," the source says. Kate Middleton and Prince William in America! See Highlights from Their Past Visits Kate Middleton and Prince William. Chris Jackson/Getty Images for the Royal Foundation The source adds, "The prize has become the Prince's Super Bowl moment of the year, and he looks forward to continuing to use the platform each year to shine a light on some of the most impactful projects doing amazing things around the world to save our planet's future." For more on the Royals, listen below to our daily podcast PEOPLE Every Day. While the Earthshot Prize on Friday evening is the ultimate reason for their visit, the couple also sees it as an opportunity to "fact-find" about some of the causes and interests close to their hearts. "Some of the things we are focused on right now is supporting some of the most hard-pressed communities up and down the U.K. and we will continue to do that in Boston," adds the source. Boston Prepares to Welcome Kate Middleton and Prince William for the Earthshot Prize Awards Prince William and Kate's trip will start with a welcome at Boston City Hall, where Mayor Michelle Wu and Ambassador Caroline Kennedy will help the couple start the countdown to the glitzy, star-studded Earthshot Prize ceremony at the MGM Music Hall on Friday evening. On Thursday, Prince William and Kate, both 40, will see the work that organizations in Boston are doing to create a more sustainable world, and they'll learn about some of the innovative technologies being utilized at Greentown Labs in Somerville. Prince William and Kate Middleton. Chris Jackson/Getty Images for the Royal Foundation Later on Thursday, they will hear about the efforts of Roca, a non-profit organization that's worked for 35 years to create a cohesive approach to save and help change the journey of the lives of high-risk young people. Princess Kate will make a solo visit to the Center on the Developing Child at Harvard University on Friday to learn some of the best practices that can be taken back to her own Royal Foundation and The Centre for Early Childhood as she builds her pioneering work in the area. Meanwhile, Prince William will tour the John F. Kennedy Presidential Library and Museum. President John F. Kennedy's Moonshot — which challenged America to put a man on the moon — is the key inspiration behind the Earthshot Prize. Earthshot Prize Winner Reveals How Prince William Is "Leading from the Heart" Through Awards Prince William. PA Images / Alamy Stock Photo Arriving in the U.S. will put the couple on the same continent as Prince William's brother Prince Harry and sister-in-law Meghan Markle, although they're not expected to spend time together. The California-based couple is set for an East Coast night of their own on December 6, when they receive the Robert F. Kennedy Ripple of Hope Award at a New York City gala. Meghan and Prince Harry's Netflix docuseries is also expected to premiere in December. Prince William. Yui Mok/Getty But an aide says highlighting and championing the Earthshot Prize is Prince William and Kate's main focus, "and we won't be distracted by other things." This is also Prince William and Kate's first trip abroad as Prince and Princess of Wales, and with that comes inevitable parallels with William's parents — most especially Princess Diana, who was so popular in the U.S. "They realize the history and the warm affection people feel towards those roles, but they are keen to pave their own path and create their own history," the source says. Can't get enough of PEOPLE's Royals coverage? Sign up for our free Royals newsletter to get the latest updates on Kate Middleton, Meghan Markle and more! A source adds, "The golden thread for them is the commitment to duty and service — being there in the communities and supporting the communities up and down the country and around the world where they can."