If you are looking to really get an authentic sense for their cuisine Istanbul Eats offers food walking tours that takes you off the beaten track and you really get a great feel for the Turkish cuisine and way of life. I did the Culinary back streets and it was fantastic. Its almost an entire day activity but totally worth it. They have a few other option for similar tours, one in particular that goes over to the asian side. These tours offers an opportunity to get out of the high tourist areas. I understand that the Asian side has some of the better places to eat, Sultanahmet has a great selection of restaurants but it is incredibly touristy and the quality is just ok.

Why is your family disappointed? Istanbul is a phenomenal city that has so much to offer. I was there 6 days and didn't get a chance to see everything I wanted to.

Yes, Istanbul is booming, a very lively city. There's lots of nightlife, which might appeal to your sons, though not so much in Sultanahmet. But an easy tram ride away.

For a splurge, from my trip report:

Giritli ($155) (http://giritlirestoran.com) was fabulous, and is a must for a relaxing evening. The more the merrier, four would be better than two, six even better. The meal includes all you can drink of raki and wine. We started with 18 mezes, including tuna sashimi, ceviche and the tenderest octopus we ever had. But most of the mezes are vegetarian, including seaweed salad and a nettles and feta (the Turks would not call it that) salad. The picture on the web site gives a good idea of what is offered.

clarkey.. happy birthday! .. please dont be nervous about taking your family to Istanbul. it is a wonderful city! there is a restaurant i went to (september) that was so great, we went back often. its called Aloran Cafe and Restaurant, in the Sultanahmet area. DEFINITELY worth finding. Great food and great experience. you can read my trip report for more information.. or lots of reviews on tripadvisor. i think my meal was under $20 each time. my mouth waters at the memory of their turkish ravioli. have a great trip !!!

Having been to Istanbul twice now, I can confidently say it is one of my favorite cities in the world! It is fascinating, gorgeous and exotic. You will have a wonderful time.

Istanbul is wonderful! In September I took a cooking class with http://cookingalaturka.com/ It was a fun time.