Been to many an airshow and seen some dazzling performances, but the absolutely most memorable was at Oshkosh where the crowd line seemed impossibly close to the runway, stood there in awe as Concorde came thundering down and main gear lifted off right in front of where I was standing slack jawed, what a sight. They were giving joyrides, but I don't think you got the supersonic experience.
Mate got a posting from London to Washington and first class travel was the norm in those days, arranged with the wheels to pay the difference so went Concorde.