Need help with pre/post cruise stay

[mkgal]

I'm looking to book a Med cruise beginning in Rome and ending in Venice in October of 2020.  I typically fly in just in time to get on the ship and get off the ship and head straight for the airport.  This time I would like to add at least a day in Rome and a day in Venice to my trip.  I'd like a service to take me from airport to hotel, then hotel to ship the next day and from ship to hotel, then hotel to airport on return.  Should I try to book this myself, go through a travel agent (which I have only done to get cruise on board credit), does the cruise line offer this type of service or do you have other suggestions?  Family of 5 - me, hubby, 15, 13 and 9 year old.

Edited December 27, 2019 by mkgal
forgot to add..

[Sauer-kraut]

You should ask this over on the PORTS OF CALL boards for Europe, there is a sub-heading for ITALY PORTS and there are a lot of people over there that can help with this type of question.  

[mkgal]

Great idea, thanks for suggesting it, Sauer-kraut.