Travelers considering this itinerary should be aware that several day trips outside Naples require transportation. For Pompeii and Mount Vesuvius, a train from the Naples Central Station costs around €4, and a shuttle bus from Pompeii to Mount Vesuvius is available for €20. The Capri boat tours usually depart from Naples' Molo Beverello port or Sorrento, reachable by ferry or train. Transportation costs will vary depending on the distance and season.
If you have more time, consider a day trip to the Amalfi Coast, where you'll find charming cliffside villages and picturesque beaches. Recommended stops include Positano, Amalfi, and Ravello. Alternatively, visit the Royal Palace of Caserta, a lavish palace built for the Bourbon King of Naples. If you have less time, you can skip the Baia Archaeological Park or visit only one of the castles. Be aware that Naples' traffic can be dense, and public transportation may be crowded. Walking is often the fastest option for short distances in the city center.