I'm assuming we won't make the 8:05 ferry, as it takes awhile for the ship to be cleared once it's docked so it will probably be at least 7:30-8:00 before we're able to get off. One option I'm looking at is doing a private full day excursion, with a boat taking us from Naples, on a tour of Capri, time on the island, and then back to Naples. By the time we pay for the ferry both ways and then a boat tour (which we want to do anyway), it seems like the convenience may be worth the bit more money, particularly if we can find a small group to split the cost.