The ensuing furor has tarnished the future king's reputation and left his conference in tatters, as foreign investors confront the dark side of his Arabian dreams.
But Biden advisers also seized on the furor to portray Mr. Trump as fixated on, and worried about, a potential general election race against Mr. Biden.
Morgan Holzer, a millennial who was surprised by the furor, said that as she approached bouquets to read their labels, she found herself holding up the process.