The local agency with which Viator is working is horrible Travelium. They wouldn't pick us up from our hotel said too far, even though it was 25 min away from Topkapi. They changed meeting point twice and told us to wait for our guide at 12:30 there. The guide showed up at 2pm and said he wasn't sure why we received these instructions. It was very frustrating. The tour itself was not very informative. The guide got us through the main visitors' line and got tickets. He then only showed us around the gardens and pointed out which places we should see i.e. kitchens, harem, armory, etc.. This lasted about 1 hour, then he left us to our own devices in the middle of the gardens. I honestly didn't learn much from him. Also, the point that is not stressed enough during the tour is that you need a separate ticket for harem - be aware of that. Interestingly, the guide also said we no longer needed our tickets and collected them from us before he left. It seemed very suspicious. I would recommend to simply get your own tickets to the palace - no need to waste time at meeting points and extra money on a guide that does not tell you much. Please note that Rustam Pasha Mosque is closed for renovation tombs of Sultans in Hagia Sophia visited instead - not that special and crown jewels and dress exhibit at Topkapi also closed for the next 2 years nothing offered instead. I think this needs to be communicated prior to the tour and it was not! I was very disappointed with this tour.