The near three-week trip has been an eye-opening experience for Moyes, who now understands the global appeal of the club he has joined from Everton.
"I am taking away the great experience of my first trip with Manchester United in general and what the football club means around the world," he said.
"I have also had a chance to get to know the players and try to settle into my new environment and for the players to get to know me as well.
"They have been working with a great manager for a long time a lot of them, so it is going to take time.
"But I have really enjoyed working with them. They have been incredibly professional.
"I can see why they are champions because of the way they conduct themselves and go about their business.
"I have been very impressed."