We are a family of 4 with 2 teen girls and we will take a train from Rome to Naples and have at least the first evening, then the whole next day and night before heading north on the train. Definites are Pompeii via the train and the Archeological Museum in Naples and pizza. Herculaneum is a possibility as would be a trip to Herculaneum, promenade along the bay, or ferry to an island. I think we can manage the museum and Pompeii in one day, and perhaps do the other on the first evening. Can anyone suggest if we should stay closer to the museum or closer to the water? I do see that the museum is open from 9 am - 7:30 pm and I wonder how long we will want there?