Dolmus are minibuses, which only accept cash, which leave when all seats are filled. Dolmus literally “crammed”. They’ll stop almost wherever you like.
In Turkey you should haggle over the price of clothes, food, spices, fabrics and a lot more. Aim for less than half the starting price.
At a hamam (Turkish bath) you’re expected to leave a tip of 10-20%. Leave some small change at local restaurants (lokanta). At more upmarket places, the service charge is usually included on the bill. Leave a small amount more than the service charge of the service has been good.