Yes, another Kennedy wedding disaster. If I remember correctly, wasn’t John being jeered at by one of his cousins at that famous “compound” to defy the fog or he’d be a wuss? That may be an urban rumor but it was common at the time.
I don’t know but online I saw that their flight was delayed because his sis-in-law got delayed at work. So they got started late and then they all were ... “late” (flying over ocean at night, inexperienced). It was get-there-itis...he could have quickly flown in the next morning but...