Be careful if someone will propose you to make a picture with your camera. To get it back you had to pay a lot of money.
The Medina in Tunis is very very crowded, I only lasted a few minutes, too many people, too many people who want to sell their stuff to you, .... not my cup of tea!
People here are kind, but very poor, so sometimes your local friends can surprise you with asking about some money. Do not expact they will give it back...