My daughter and future son-in-law were on a plane approaching New York at the time. Their aircraft was turned around and sent back to Heathrow, London. If they had been ten minutes earlier, they too would have been diverted to Gander, who did a miraculous job of hosting their unexpected guests.
Leah and I were lucky enough to be at the final preview when the show opened in London in February 2019. To our surprise we discovered that two of the main real-life characters who were being portrayed on stage were sitting next to us. And they pointed out that we were actually surrounded by most of the real-life characters and the creator and original producer were sitting behind us!