Thank you all for the sound advice. It is good to know that arranging a driver for the wedding will not be a challenge. Please share any suggested car transport companies you'd recommend. I'll have a look through other posts as well.
Definitely taking the advice to spend longer periods in each of the cities. We arrive on August 24 and the wedding events are on August 27 and 28th. As a result, we will only have two exploring days at a port of entry. We're worried about giving Venice only two full days or splitting a longer period of stay on either side of the wedding dates.
Would you suggest, we split up our time in Rome? Spend the 25 and 26th seeing some things. Siena: 27-29. Then Florence for 4-5 days (day trip to Pisa) and onwards to Venice? Then return to Rome for additional days at the end of the trip?
Or should we land in Rome, and go straight to Florence, use those first two days to explore, Siena for 3 days, then return to Florence before going North and south (relatively)?
We haven't reached retirement yet (You're lucky Larry42!) , but are just as interested in delving deeper into each city.
This trip is a second attempt at visiting Italy - our first was cancelled due to COVID, so the enthusiasm for Italy here has us very excited.
We're so appreciative for all the advice - this is a wonderful community. Thank you, Thank you.