Should I prebook all of the sight seeing tours I am interested in for our Italy and Paris vacation?

August 1, 2010 by Paris Vacations  
Filed under Paris, France Information

Our trip is for 2 weeks in August - Rome, Florence, Venice and Paris. Should I pre-book all sight seeing tours or is okay to do them as we arrive in each city? I am concerned about their availability and also the cost. Does it cost more if I do when I am there?

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