So first thing first. Left high and dry by a tour operator in Greece! Our plane was delayed by 30 minutes, still arrived in the time we said we would be there. No driver. Texted driver through Viator. No response. Called Viator for a refund they said the driver was there for and hour and half waiting for us???? How could that be when our agreed upon meeting time was one hour after we landed so we could gather our belongings and walk the mile and a half in the Athens airport to be on time for the driver . Viator shut me down. I had text documentation, flight documentation and they refused refund and sided with the tour company. Nice customer service. Left in a foreign country with my elderly Mom. No support. Do not book with this company. Go to the bottom of the tour itself and the name of the tour operator is right there. Book directly. Shame on you Viator for not backing your customers and having them pay for services before they are rendered. Never ever ever again