” personally believe that it is a strange practice to mix languages in one sentence, as one would not speak that way to a king.”
I’m not sure why you feel that way .We pepper our languages with foreign words all the time. Some have been accepted as standard english I can give several bona fide examples, ad nauseum but I think this may be a fait accompli. And even words that are not commonly used in English if the King understands it I wouldnt hesitate to use a foreign word.