So I have 3 options and due to concerns about ZTL's, bus lanes, etc... I am not sure which makes more sense.
I think to answer the question you would need to know the 2 areas mentioned
Renting a car for use AFTER Florence.
Staying near San Miniato Al Monte so outside of any ZTL zones.
Place has a free parking and a spot for us on site.
We will reach the place by driver originally.
Original thought was I would walk to the rental car place Europcar
Via Borgognissanti, 55/red, 50123 Firenze, Italy morning of checkout without luggage and pickup the car myself, drive back to the B&B and pickup my family and luggage so when we check out we can drive straight out of Florence without delay.
Allows wife and daughter to sleep in a little and pack while I am out.
If I don't do this post check out we would need to take a taxi to the rental car place, fill out the paperwork then, etc... all of which would mean time lost if the earlier morning hours would otherwise be more free to me plus extra money of taxi cost.
Since I wanted to visit Siena this day I was trying to keep the drive as quick as possible. Traveling with our 3 year old daughter so just seems easier on her this way.
Concern is potential of me going into a ZTL or Bus Lane type ticket trying to get back to the San Miniato Al Monte / Piazalle Michelangelo area.
The car rental place seems in a ZTL but understand they advise a way out which avoids ZTL fine when renting. Just would need at some point to not get completely out to the highway and head back to where our B&B is not crossing back into a ZTL or bus lane along the way.
2nd thought is I could do this all the morning before, pay more for the rental of an extra day but pickup Sunday morning so the ZTL would not be active. Rental hours state they are open Sunday but only in the morning. Could still screw up the bus lane thing though I guess??? and is likely more costly than a taxi to pay an extra rental night.
3rd option would be to check out, take a taxi with bags, wife and daughter to the rental place and just rent the car then and leave Florence which is more common I imagine but seems a little more of a hassle in our situation.
Need to book the car rental pickup time now which is the reason for the question being somewhat urgent.