Hello. We're weighing up an excursion from Naples to Capri. It's a boat, that takes us to see a number of places from the sea (the blue grotto etc). It then gives us 3-hours on the Island of Capri. We're thinking that might not be long enough.. and instead catching the hydrofoil over to Capri and spending the day there. Our ship is in Naples from 7am to 7pm. We're thinking you would want the whole day ashore on Capri. Any thoughts to that please?