Unfortunately we only have one night and one full day for our trip to Florence. I can't make a decision on Sept. 6 (Friday) with the following two options I have:
1. Catch an early train to Pisa and come back to Florence at noon or before noon. Visit other attractions after.
2. Visit a gallery/museum 1st thing in the morning before heading to pisa in the morning (e.g. Galleria dell’Accademi). Most museums open around 8:15 am. I notcied Uffizi was fulled booked online in the morning of Sept. 6. The only option if we would like to go this attraction is from 11 am until late afternoon. However, Galleria dell’Accademia is still available for all time.
By the way, our train will arrive in Florence at 7:25 pm on Sept. 5. Our train will leave florence to Venice at 5:55 pm on Sept. 6. In the evening of Sept 5, we will visit squares, old bridge and churches (outside) as much as we can.
Thank you for your suggestions. :)