I assume there is no need to provide continual testing anymore? Or is providing a negative PCR still a requirement to embark? The former being the case then I see no real reason to worry about being quarantined. Especially if you are vaccinated then contracting COVID should be (hopefully) no worse than a couple of days feeling lousy with no need to alert a medic, and unless you actually test then you likely will not know you indeed are positive. In which case, simply go about your business as you would when you feel under the weather, be it staying in your room or cracking on with your holiday regardless.
It baffles me that cruise ships seem to have such a stigma attached to it when it comes to these types of things. Its really no different than booking into a large hotel for a few days.
If people are genuinely worried about contracting COVID then I suggest (regrettably) a floating hotel isn't for you right now.
