I am not sure I could pack enough proper crackers for snacks, (the druiselines drackers are terrible) to get me all the way to England where I could resupply. Asia and the US/ Americas simply don't sell them.
OMG, I pretty much pack the same clothes for a long weekend as for a 8 week trip, the only difference is having a few extra outfits such as the Tux, a towel, cold weather gear such as warmer jacket, beanie, gloves etc.
I don't know of any ships with baths over tubs.
Some lines were enforcing age restrictions (70) for cruises not long ago, people were not happy.
People need to take responsibility and measures for themselves as well, if they think they may fall they should get a cabin without the bath.