Some countries at WS are more "immersive" than others. Morocco is a good example, but it was also one of the last countries done and was personally funded by the King of morocco who sent his own architects to design the pavilion.
The UK, Japan, Morocco and Mexico are all more immersive, and Germany, Italy, America aren't very immersive IMO.
That said, it IS very tastefully done and it is not tacky or like you'd see in vegas for example. The attractions are also well done and authentic (except for three caballeros invading Mexico).
France, China and America have the best shows IMO.