My group of 30 people, mostly teenagers under 17 is traveling to Europe this summer. We will be spending a day in Rome doing the typical tourist sites and the next day we are going to Pisa. I had heard there were laws requiring groups to have a licensed tour guide. I have tried to find more information about this but have been unsuccessful.
Can someone please provide some insight and possible sources that explain these requirements if they exist?
Thank you in advance!