The human population growth rate would stabilize in Universal Community Cruise Ships for many reasons that would prevent the increasing human population from depleting already overstretched resources. Having too many children for socio-economic reasons or a lack of education would not be part of a Community Cruise Ship.
As with an actual cruise ship, a Community Cruise Ship is populated with people of many different races and cultures making the community experience that more educational and interesting.
Many human differences are the result of cultural perceptions and disparity. Within an Community Cruise Ship many of those differences would quickly disappear. There would be no communities within a community, previous national identity, culture, race, sexuality or other divisions; the community is fully integrated.
The Community Cruise Ship would have complete equality and integration to achieve a universal adult standard. Whatever perceptions have been in the past, they would remain in the past. The Community Cruise Ship is an adult future.
Excellent communication is critical between humanity for many reasons including the efficient operation of a community ship, human development, and resolution of issues.
The unification of language would be essential for the community. One core language for humanity. Not two, just one. The Community would not make any allowances and enable a second language or humanity's core language would fail to be a unified language.
All Community Cruise Ships globally would speak the same language. A globally widespread language that can be learned with relative ease would be selected. The selected language would inevitably have evolutions influenced by other dominant languages. Universal communities would have first generation populations from all national origins to ensure that Community Cruise Ships are globally balanced.
A second generation within community ships will identify with an adult system and been born of a global identity and sense of universal connectivity; these are the children of humanity's future. Universal Community Cruise Ship children will have almost no regard for previous divisions preventing a divisive cycle from repeating.
Learning other languages for historical reasons and tourism in preserved cities would be fun, educational and interesting for future generations. One unified language for one unified species. Families predominantly speak the same language, and the universal Community Cruise Ship is family orientated.
