Marti, looking back at some of your previous posts I'm a little confused. In an earlier post, you stated that you had already booked train tickets to day-trip Venice from Florence, and a tour to the Cinque Terre.
https://community.ricksteves.com/travel-forum/italy/tour-questions-venice-genoa-florence
"we get back from the cruise on the 6th and off to Florence via train. 7th we rest and explore Florence, then on the 8th we go to cinque terre with a tour and on the 10th we go to Venice on our own on the train. The 11th back to Genoa via train to catch a flight to Barcelona.."
"We have booked our train to Venice from Florence so YES :( we leave on the first train apprx at 7.00 AM and come back around 7.30 PM."
And you were given some ideas for Florence/day trips with the kids as well:
https://community.ricksteves.com/travel-forum/italy/florence-9ef53020-ab97-4d79-9020-156ec18ff1ec
Not sure what additional information you're needing? Or did you cancel your tickets/tour and overhaul your schedule? According to the one posted above, your only free day is the 9th. As you've only given Florence one day, I'd spend that additional one covering more of the city: it has plenty to keep you busy for 2 days depending on interests (and we don't know what those are).