But as has been detailed in discussions surrounding the Adventure, including on this very board, the US and UK aren't the target markets for this ship. The population of SE Asia, China and India absolutely dwarfs the populations of the US and UK, and one look at the theming, offerings and menus on the ship absolutely reinforces who the target demographics are.
I think that despite the three parks located in Asia, people are still struggling with the idea that Disney doesn't always first and foremost cater towards the Western market. Not aimed directly at you, but there seems to be a vacuum within the Disney subculture that thinks Americans are the only ones that visit Disney, hence the Adventure is simply "too far" away (with complete oversight of the fact that people living in Australia and Asia face the same predicament if they wanted to sail out of Florida).