For those of you who are booking private Tours for the first time, perhaps a little clarification would help. By Greek law, tour drivers cannot guide inside the sites and tour guides cannot charge you for driving. A tour driver and a tour guide are not the same. It is to your advantage when booking a private tour to be sure that you understand and know in advance the difference, so that you are guaranteed the kind of guide you are expecting. As a tour driver, I can tell you everything I know (my customers say "More Than A Guide") about the sites, up until you enter the site, but Greek archaeological sites and museums are very strict about using only licensed guides within the sites themselves. I can arrange for you to have an Official Tourist Guide with an extra charge, if you think it is necessary for you, to have a full understanding of what you are seeing.