When King George and Princess Margaret are singing, the English captions on Netflix incorrectly render the lyric "Bewitched, bothered and bewildered am I" as a question. Presumably this is a result of automated captioning failing to recognize the poetic use of "am I" as a statement.
Despite what courtier Martin Charteris says, it isn't really true that the Queen's uncle King Edward VIII changed his regnal name from David to Edward. His full name was Edward Albert Christian George Andrew Patrick David, and before becoming king he had been known to the general public as Prince Edward. Only his family and friends called him David.