We chose the Costa neoRiviera purely because of the itinerary - we wanted to start in Istanbul. The departure was changed to Athens but we had been there before so it was a disappointment, although understandable in the circumstances. What wasn't so understandable was why we were still flown to Istanbul for a 4 hour wait for transfer to Athens, leaving us arriving at the ship at 12.30 on 26th unable to eat or drink because all facilities were closed for the night. Customer service staff weren't all that helpful and to be fair a cold snack was later sent to our rooms.
Despite having been to Athens already, we really enjoyed seeing it again. Exiting the port we were offered a 15 euro transfer for 3 to the Acropolis which on discussion with the driver became a 50 euro day tour of Athens with return direct to the ship which we found to be great value.
The weather certainly plays its part in influencing your memories of the Greek islands and we were not disappointed. Mykonos was our next stop, really no need for any excursions, the town is lovely in itself, and a water bus takes you there for 2 euro, no need to buy expensive transfers. We headed for Delos on a guided tour and it was better than we expected, a mini Pompei.
We bought a Costa transfer to town for 12 euros, despite a huge sign on the quayside advertising a taxi for 4 for 13 euro for exactly the same trip. To be fair we bought them before we docked but a little research would have been better! Do not go by Costa bus. Find a few others and go for a quarter of the price and more quickly.
For 50 euro a taxi will take you up to the cable car viewpoint and other vantage points so for 4 its much cheaper.
The walk around the city walls really shows you why GOT uses this as a location!
Transport is expensive for what you get in Venice. The walk to San Marco from the port area is easy to manage and you get to see the 'back streets' of Venice.
Taxi took 3 of us to the locations of our choice and back to the ship for 50 euro. Great day out in a great city.