DOBIN OF THE SEA

Hi I am in a group of 20 plus people who are on a RC cruise in Oct.23 to celebrate a birthday, some are questioning if t is possible just to get off the ship and book your own excursions to most destinations from stalls e.t.c. around the port as some do not want to pre-book and see how they feel and what weather is like on the day, we are landing at the following ports :- La Spezia, Civitavecchia and Naples - any ideas, assistance would be greatly appreciiated.