Tourist cruises charge 800-1200 TRY for exactly what the regular ferry service provides. From Eminonu, take the standard city ferry line to Anadolu Kavagi and back - hits every palace, fortress and scenic point the tour boats do.

While IDO ferries offer premium service, even the basic city ferries are less crowded than tours, you can bring your own food and drinks, and locals actually use them so it feels genuine rather than touristy. Full round trip takes about 6 hours with a 3-hour stop in Anadolu Kavagi for lunch and exploring the castle ruins.