First, the movie sets are going to be even more magnificent than the Masterpiece PBS show, which, we didn't think was possible, but here we are.
Yes, there will be more "Grantham grandeur," more pomp and circumstance, more gorgeous turn-of-the-century stateliness, and on a much grander scale than the show. As Dockery points out, the Crawley family, who are usually at the very top of their Yorkshire society pecking order, must now impress actual royals, since the plot of the movie centers around a visit to Downton from King George V and Queen Mary (aka Queen Elizabeth's real-life grandparents).
“There are more diamonds and fancier food, and it’s really interesting to see that the family and the servants are not at the top," Dockery said. "They’re now having to impress the royals, which I think is really great—to see them kind of getting in a bit of a tiz about the arrival of the king and queen. Mary is in true form of trying to keep everybody in order.”
So much pomp and circumstance, in fact, that the show's historical adviser, Alastair Bruce, consulted with one of Queen Elizabeth’s actual longtime household butlers, as well as a former equerry (aka a personal attendant) of Prince Philip’s. These two former Buckingham Palace household staff members taught the cast (including the on-screen Downton staff) the historically accurate way to behave around a monarch during the late 1920s, when the movie takes place.