Cliff Notes Version
The majority of the people on the cruise are regular cruisers. Many of them are various levels of Royals Crown & Anchor Society. Most of them are Royal cruisers who have been on a huge amount of cruises and wanted something a bit different. In this group theres a few retired couples who are vlogging on YouTube, BZ Travel and Living Phase 2.
Then theres a group of younger social media content creators, many of whom have never been on any cruise before. They are there are as its good content and they can monetize the content Alot of the drama is around them, they are posting mainly to tik tock, which is getting a lot of publicity. Alot of the drama is due to them not knowing cruise culture in general and not understanding things that happen on cruises all the time. Things like people being seasick, or ports being missed due to bad weather or how cruise loyalty programs work, as in how top levels get to do things first time cruisers cant, and have a special lounge etc etc.
Marc Sebastian didnt even pay for his cruise. He is being sponsored, by a book company, as in the book company paid for his cruise. He has never been on an cruise before. He is only on a segment of the cruise.
Also some of the drama is around the people who are there for the whole 9 months and the people who are only doing a segment of the cruise. Like on any cruise theres meet up groups. People who are only doing a segment of the cruise are not happy they are not in the meet up groups the 9 months people have set up.