I understand your frustration but some of those kids will remember the lucky half-term day (when Dad/Mum ran out of other ideas) for many years, and tell their children about Concorde. With any luck they will also see your magnificent photograph (and DamienB's) and wish there had been another way to continue the story.
My story will relate to GA days and the time I was cleared in 'No 2 to Concorde' while right base for 24 , in someone else's Piper.
This time, we were out alongside 06R, an older couple lent my son their digital binoculars and kept us informed of progress. It was cold and windswept but an excellent vantage point for approach and touchdown. I must admit I wanted to avoid the crowd indoors.