I see NCL offers LOTS of excursions to Rome, etc. I just want to be dropped off by the Vatican no tours, and also see the Colosseum, what excursions could we take? I see some are $300 per person or so, and since I am buying X3 for each excursion if I can save some money (or NOT waste money) on excursions that aren't neccessary. Can anyone help please?