We are booked on this cruise for April 2024. The Istanbul Post Extension became available and we grabbed it up. Previous to this we were looking into a private tour as the extension was sold out. The extension includes a tour of the four main highlights (Hippodrome, Blue Mosque, Hagia Sophia, Grand Bazaar) that were going to be covered on the private tour. Whether Viking covers these as well as the private tour is unknown to me. So ----- I'd appreciate hearing the thoughts of folks who have done this extension. How did you like it? Should we still do the private as well?