Some practical information:
From Monday, 11 February, the new tram line no. 2 from the Florence airport to downtown (railway station) will be operational. The trip on the new line is free of charge for the whole week. However, it is likely that the service will start at noon on the first day, due to the formal inauguration. This line is connected to the other one and to all buses.
The best way to reach PIN from Florence is by train (the Prato-Pistoia-Lucca-Viareggio line). Most hotels in the city center are at a short walking distance from the Santa Maria Novella train station and there are about 3 trains per hour during the busier hours of the day (6-10 am; 4-9 pm). The trip takes about 25-30 minutes.
As the morning activities will start at 9:30, we suggest that you take the train departing from Firenze S. Maria Novella station at 8:47 with arrival in Prato Porta al Serraglio at 9:20. If you miss this train, the next one will leave at 9:10 and arrives in Prato PS at 9:33.
For those staying in Pistoia, the best train is the one leaving from Pistoia at 9:12 which arrives in Prato Porta al Serraglio at 9:22.