I have read all of the literature, contracts, etc. If they can meet their target commitment, I can see it working. I thought long and hard before sending my deposit. As a single cruiser, most world cruises are prohibitively expensive. Being able to sail for under $5k a month seemed like a screaming deal.
Having a cruise that long has certain challenges, like receiving mail, prescriptions, medical insurance, and obtaining visas, but the passengers have been tackling these issues one by one.