@Tracker1234
You cannot live on a cruise ship realistically if the time has come to go into assisted living. Who would look after you?
Depends on your needs and abilities really, doesn't it. Elderly people don't all age at the same rate and their "care" needs don't all progress in the same way.
"Looking after you" for a lot of people will simply mean not having to deal with "life admin" like shopping, cleaning, laundry, making meals, etc. - they may be perfectly happy/capable of personal care etc. Living in a hotel or on a cruise shop means that you can tootle around doing your own thing, but not having to worry about washing/ironing your clothes/bedding, not having to cook your own breakfast or evening meal, not having to sort out a gardener or cleaner, having a social life amongst other elderly people "living" in the same hotel/cruise etc.
It's really only personal care that a hotel or cruise couldn't provide, i.e. help with dressing, washing, toileting, etc., but neither would "assisted" living either, unless you paid for personal carers to come in, which is nothing to do with the assisted living home.
Obviously, dementia sufferers are a completely different matter, but again, "normal" assisted living probably wouldn't be suitable either as their care needs would be different and higher than residents without dementia. But dementia sufferers wouldn't be able to live in hotels nor cruise ships either.