If you get into naples by Cruise and want to see most possible in the time you have,  here our new proposal:

Pickup at port as early as possible (about 7.30am)

Drive around teh bay of Naples in south direction to Sorrento. Stop at a viewpoint overlooking Sorrento and the other towns close by , S. Agnello, Piano di Sorrento and Meta.

Drive to the famous Amalfi Coast with stop at a viewpoint to overview Positano too. From the viewpoint you can see hole Positano how it is build at the site of the Mountains. Really spectacular!

From here drive along the coast througth Praiano, Conca dei marini, Furore  in direction to Amalfi - the most famous town along the Amalfi Coast! Stop with free time to visit the beautiful  cathedral of S. Andrew from teh 10th century  and the towns center. After that drive up to Ravello and also here free time to explore the town with its beautiful Villa rufolo close to the town center from teh 13th century.

In Amalfi or Ravello you also find many shops for souvenirs, Limoncello, great ice-cream, coffe places for a cappuccino or a tipical Sfogliatella Santa Rosa or a quick snack as Pizza or else....

On the way back stop at the ruins of Herculaneum. Less famous, but as interesting as the ruins of Pompeii(bouth from 79 a. C. . burried from eruption of Mt Vesuvius) Stop with free time also here for the visit and then dropp off again at port in teh afternoon.

We can also skip the ruins stop and just make the free time in the towns longer - as you prefere!!!