This is a demonstration of the Whitbread family's position in London society: the king and his family came visiting:
"On the 26th of May this year , the King and Queen, accompanied by the Princess Royal, the Princess Augusta and Princess Elizabeth, preceded by the Dukes of Montague and Ancaster, went to see Mr. Whitbread's porter brewery in Chiswell-street. They were received at the door by Mr. Whitbread and Miss Whitbread, when, after politely declining the breakfast that was provided, their Majesties and the Royal Family went over the works. The steam-engine then lately erected, and first applied by Mr. Whitbread to the purposes of the brewery, took up their attention above half an hour, during which time his Majesty explained to the Queen and the Princesses the leading movements to the machinery, in a manner that fully proved his knowledge of mechanical arts. In the great store were three thousand and seven barrels of beer. The stone cistern raised such wonder, that the Queen and Princesses would go into it, though through a small hole, with some difficulty, and the sight rewarded them for the trouble, on account of its vast magnitude, capable of holding four thousand barrels of beer. Though the machinery now used had saved much animal labour, still there was work for eighty horses. This particularly impressed his Majesty, who also saw two hundred men at their various occupations. The horse-keeper, yielding to the harmless vanity of office, said he would show his Majesty " the highest horse among his subjects." The King graciously gave him something more than audience, and accurately guessed the height of the horse, which was really remarkable, being seventeen hands three inches. The King however observed, that his muscle was not proportioned to his bones. Such parts of the brewery as were unavoidably dirty were covered with matting, and lamps lighted in those which were dark. After having inspected every part of the premises in a minute manner, the Royal Visitants retired into the dwelling-house, and partook of a cold collation, as magnificent as affluence and arrangement could render it. The whole service was plate, and there was an assortment of every wine; and that the board might not be incomplete, some of Whitbread's intire was poured from a large bottle, that had more excellent singularities than mere size to recommend it. After partaking of this plentiful regale, it was two o'clock; and their Majesties and Royal Family took leave of Mr. Whitbread and his daughter, highly satisfied with the various species of their entertainment.""The public and domestic life of His late Most Gracious Majesty, George the Third, Volume 1" by Edward Holt, pages 299-300.
That's exactly what I'd do if I were a prince. Get dad to take me around a brewery. Those lucky royals.