Extremely good advice.
Having been on several cruises over the years, they really emphasize cleanliness, with hand sanitizer dispensers everywhere. With two to three thousand people packed into that small a space, they do need to be very health conscious. Which leads to the suggestion of trying to find a discreet place in both the bar and the parlour for a couple of dispensers.
It can't do any harm, and would be very useful to those, such as me, who would use them.