Florence is easy until the tickets are gone. Plan the Uffizi before the hotel.
Official gallery tickets
Uffizi and Accademia on official sites. Third-party “skip the line” is often a marked-up timed slot.
Church dress
Shoulders and knees for the Duomo. Carry a scarf. The same rule as Rome.
Sleep in one neighbourhood
SMN for trains. Oltrarno for evenings. Switching hotels for two nights wastes the trip.
Validate regional trains
Yellow machines on the platform. High-speed tickets with a name and seat do not need a stamp.