JMO - The Detectives have delved into who could have been aware of the trip (Albeit the quickly changed date for travelling to the FGM's home in Kendall).
They didn't phone the FGM until they were on the road. But what about:
Staff at Daycare, the children were picked up early, assume FM told them reason:
Co-workers of the FF, he phoned and said his Thursday afternoon meeting was cancelled, lets go early. So the whole lets go early was his idea. Assume he told at least some of his co-workers/bosses etc. And word could have spread from there.:
Was FM at work that day as well?
Way out there, but the cat boarding place, the last minute rush.:
What about their neighbours in Sydney?
Any of these people could also have told others.....
And FGM could also have talked to people in the time between their phone call and the arrival (5 hours or so)
The narrative has always been that no-one knew of the changed timing, but if you delve into it, there were quite a few that were aware, even from the time they left Sydney.
IF (and I am not saying it was) a planned abduction, there was plenty of time for abductors to adapt. I just dont buy the narrative that it couldn't be planned because no-one knew they were there.
I can't see how William's early arrival thwarted anything. He was still there on the date the abduction was planned for (if it was an abduction. )
But had they come up on the Friday, they would not have arrived there until early afternoon. They would not have been there at 9am to 10am.