It was said Moyes would not understand the true scale of the club he has been asked to take charge of until he saw for himself how popular they are in this part of the world.
Moyes has not been disappointed so far. Massive crowds greeted their arrival in Bangkok on Thursday, the numbers were almost as large when the Scot went to sign a book at the local hospital in honour of the King, while some keep a vigil outside the team hotel waiting for a glimpse of their heroes.
Thousands trekked out to the Rajamangala Stadium to watch the Red Devils train on Friday evening, with a sell-out 48,000 crowd guaranteed for saturday night's encounter with the Singha All Stars.
"When we arrived at the airport there were lots of screaming young ladies," said Moyes.
"I don't think it was for me but it was like some famous pop group arriving. It was incredible.
"We were taken on to pay respects to the king, who is in hospital just now. It was pandemonium when we got there.
"I have not been surprised but the scale of things has been fantastic."
That Singha have been prepared to shell out £2.5million to have United mark the 80th anniversary of their existence underlines what an attraction they are, even if there has to be an element of disappointment at the absence of injured Wayne Rooney and top scorer Robin van Persie, who will not link up with his team-mates until they arrive in Sydney on Sunday.