I think you do explore - that's the point - the ship docks at various coastal towns and you go ashore for the day, then go back on and sail again. You're only going to be stuck on the ship for 7 days if you're sailing straight across an ocean.

Plus some people like to just relax and for example take the time to read a book on vacation and aren't looking to explore.

I used to think this as well, but my family and I decided to try one out and we explored way more than we normally do on holiday - due to the fact that you're in a different port each day, you end up visiting way more different places than a traditional holiday, where everywhere you explore has to be centred around your hotel. Cruises especially allowed us to explore a lot of cities and towns, which we normally wouldn't have gone to due to the lack of "chill out" time on city break holidays.

Of course, this is my experience of cruises around Europe, where there's a lot of interesting ports clustered closely together. The experience is probably pretty different otherwise.

I was on that ship, and whenever you went into one of the buffet area you had to sanitize every time you went in. There was an employee holding the bottle at the doors

Alcohol hand gels do not work against norovirus.