Where bad reviews can come from
People who are at their financial limit when they book their trip and don't have extra coin for fun and extras, will be setting themselves up for disappointment if their expectations are great.
I think that bad reviews come mostly from this crowd. A few coworkers have done RCI cruises and have only good things to say.
What concerns me about Allure and Oasis is how the ports of call are able to handle 5000+ tourists disembarking. These ships are on my to sail list but I will wait until the ports of call have all the wrinkles out.