Royal travel is slowly but surely returning as William, Prince of Wales, is expected to travel with King Charles III to commemorate the 80th anniversary of D-Day in Normandy, France, on June 6. This is expected to be the monarch’s first foreign trip since he was diagnosed with cancer in early February. Normandy American Cemetery will serve as the site for the commemorations, and “other senior members of the British royal family” are expected to attend as well. A palace insider revealed that it “is highly unlikely” Kate, Princess of Wales, who is also battling cancer, will show up at this event…