This tour was great as was our tour guide/driver Gregory. He was on time for pick up. He drove that van like a pro. He told us so many interesting stories about the history of Santorini as well as some insights into modern day Santorini society. Audio in the van was good (loud and clear) and I'm somewhat hard of hearing. The winery we visit had the most amazing sweet dessert wine that I had to buy a bottle (and I'm not a wine person at all). The castles and their ruins were so interesting so see. Definitely take this tour, with Gregory if possible, to get a better appreciation for Santorini.