We considered doing a dinner cruise, but they were all very pricey! Instead, we found a little place along the waterway that had boat rides for remotely inexpensive. They were little taxi boats and it made 3 quick stops before returning to our dock. I think it was about $5.00 each or so. It was a 90 minute ride on a big boat and it was a beautiful day to see everything.
Something that will always stand out to me was the amount of pride the Turkish people have in their country. The flags are flying everywhere (even along their homes) and our boat proudly displayed a few of them as well. It was a memorable experience!
Istanbul is a beautiful city... and riding along the Bosphorus was amazing!