For me, I would prefer fully vaccinated ships (adults for now) with limited other precautions. For now, I would be fine with masks indoors in crowded situations, such as the theaters. But much more than that is a deal breaker for me. Especially limited shows, reserving spots on the pool deck, limited time for kids in the clubs (though my youngest only has a little over a year before she ages out). At some point, it just doesn't feel like vacation anymore and is a constant reminder of the pandemic. There are also great alternative vacations calling my name that don't require this level of precautions - we have taken a few and had an excellent time.
It seems Disney is taking things further than other lines that have been cruising for months with few problems. And I do feel some measures are a bit of theater - plexiglass buriers, masks outside on a ship that is moving and has constant clean air passing by spaced passengers. There is even growing evidence now that in indoor spaces, it makes no difference if you are a few feet from someone or sixty feet, bringing into question spaced, and therefore limited, entertainment.
I can't say I blame them, even if I would feel sufficiently safe sailing on a vaccinated ship with very light precautions. I'm not an expert and Disney is listening to experts and playing it as safe as possible.
Even if all of it is warranted, I simply love
DCL too much to alter the experience so heavily as to detract from it. And while I am normally not all that bothered by masks, I can't imagine enjoying myself by the pool, in the sun, with a mask on my face. Or planning my day via reservations on what used to be the most relaxing form of vacationing possible. I would rather wait, even if a couple of years, and enjoy sailing like we used to do it (hopefully self-serve buffets are gone for good).
In short, my objection to cruising with all these restrictions isn't because I think they are a bad idea, but simply for selfish reasons.