We will be in Florence for the week beginning July 8. Is it worth it to purchase a tour for Euro 90 for an all day trip to Pisa, and two other cities including lunch. Several such trips are offered. How do we know which is the best? We have already booked a cooking class for the same amount that begins in Florence and goes to a farm outside of the city. Will this be a good experience and is there a better way for a one day cooking class.