Sorrento is a beautiful place to just wander around and shop, eat, sit and people watch. Of course you might want to consider the tour to Pompeii, its an amazing excavation - but it is hot and dry, so if you go take lots of water, wear sunscreen and a hat. We did the ships excursion to Pompeii and then when we got back they dropped us at the Lucky Store where we bought some olive wood music boxes for the Granddaughters, then we just wandered around and found a little restaurant and had a light snack and beverage and I did a little poking around in some shops then we headed back to the tender dock and ship, we had two or three hours after our tour in Sorrento. The tender will drop you at the bottom of the hill, and you can walk up or take the shuttle bus - same going back.