We are considering booking a day tour through this company: Efendi private tours. We are looking at a tour that includes Dolmabahce Palace, a two-hour private Bosp. tour on a yacht, big lunch at a restaurant, Beylerbeyi Palace, drive to Nakkastape for the nice vista and a Turkish coffee stop. Here's a link to the full info: http://www.efenditravel.com/Bosphorus-Cruise-and-Asian-Side-Tour-efendimenu6876435897436-tid129-dilurl2. All food and entrance fees included.
It's 300 Euro per person if there's two of us (200 Euro if you nix the private yacht for a public ferry). It's kind of pricey. But the price falls to 185 Euro for 4 people and 140 for 6.
So, I know it's a long shot, but anyone else on their own in Instanbul on the 8th??