Joachim and Marie send away in a restaurant
The restaurant Pastis in Copenhagen was full, Joachim hadn't made a reservation, so they were sent away despite his blue blood
I doubt that it happened this simply. Noone in his right mind with a bit of experience would go to a good restaurantin the days before christmas without having booked a table first. When there is no space, even the emperor looses his right.... (Variation of an old German saying). Joachim surely is in his right mind and surely has a lot of experience. So that can't be true.
What I think has happened: Joachim and Marie were in Copenhagen. They had a light dinner before going out - maybe iceskating, maybe to the cinema, maybe to a concert. Then one of them decided that there was still some appetite left and Joachim said that they could try out this restaurant to see if they were lucky to get a table spontaneoulsy, otherwise they could go back home and eat some more there. Well, they weren't lucky.
Normally that is quite the catastrophe for a restaurant, a thing to be avoided at all costs. I recall an incident in Copenhagen when a restaurant was booked for a group of celebs, but Fred came along with his bodyguards and the manager allowed him in. When the host realised there was this small group in the restaurant he had not invited he tried to oust them, but on learning that this guest was the future king of the country he himself was a guest in, he understood the manager's decision and supported him.
Obviously this time there was simply no table available. I bet the manager offered to let Joachim and Marie select from the menu and send a Sous-Chef to them to cook it at Joachim's place à la minute. At least that's how it is done here in the top of the German gastronomy.
But they never ever were send away without any try to help them at all! And if so, you can forget that restaurant in the future. There may be clients who enjoy the "message" that the restaurant is suprior to even the most noble clients for a moment, but that doesn't last. Gastronomy is about good, reliable and valuable service if you want to attract customers who keep you in business.