We will be in Rome in June on the NCL Epic. We arrive at 6AM. Currently we have the Colosseum booked for 10:25. Just wondering, how long does it take to walk around Vatican City and check out St Peters Basilica? We have no interest in a detailed visit, just basically want to walk around and maybe check out the basilica. Could you do that in an hour? We would be arriving there at about 8:45 on a Tuesday. Would it be advisable to arrive earlier than that to avoid lines at security?