i'm sure they will. Americans love Australia/NZ and they love Disney. It is a winner for Australia, esp if it is one of their older ships. Count this one as practice.
In the meantime, if you like long haul flights, have a look at WDW, Florida. Disneyland is only one of their Kingdoms it has four theme parks - EPCOT, ANIMAL KINGDOM, HOLLYWOOD STUDIOS, MAGIC KINGDOM PLUS BLIZZARD BEACH AND TYPHOON LAGOON WATER PARKS, plus Disney Theme shops galore.
WDW Theme Parks closed for 2 days due to Hurricane Ian.