I've never been on a cruise ship. Say someone goes on a vacation cruise ship that travels across various countries throughout a 7-day period. When they get to these countries and there are places of interest to see, do they just dump the passengers off and let them wander? Or do guides/people help navigate them? Because it would be kind of confusing for some if you moor the ship at a dock and the passengers come out and have no idea where to go/what to do/etc. Let's not forget that you can get lost as well, correct? It's not like you take a car with you on the ship so you're likely on foot unless some guide or something takes you to places in one or helps you navigate.
Also, when it's time to depart, the ship will leave with missing passengers, I believe, if they don't embark after a long enough period of time, no?
Given so, how does this situation work out? Say I board a cruise ship and we reach the port of a pier or anchor the ship by a beach. What next? Do we leave and just wander? Do people provide maps? What if points of interest are FAR from mooring/anchoring points? Do we have to walk confused in places we've never been? It would be great to know how this works out.