I agree. Based on this
article, it looks like scrapping a cruise ship nets between $100 to $400 per ton. At $400 per ton, and 208,000 tons, that would be approximately $83,200,000 or $83 Million. That's about all that the company can recoup for that ship. My guess is that Disney pays a fractional amount of it above it for the ship as is (e.g., $100 million), and spend another $300 million retrofitting it to Disney's standards. That would be $400 million for a ship that's already built for a very specific market. By comparison, it is likely that the Disney Wish costs at least $1 Billion.
If the Asia market is a bust, they could repurpose the ship and remove the custom-market pieces out, and use it to sail in Australia. The point being that their capital outlay, or risk, is significantly less.