Before the trip to Tunisia, hryvnia or rubles is better to change on dollars or euros, as this currency is easily converted to Tunisian dinar. In Hammamet, as in all Tunisia, the exchange of currencies apply. The government controls the currency market and therefore the exchange rate is the same everywhere. It is very convenient, as it is not necessary to run around the city in search of exchange offices with a favorable course (which is simply not there). Currency can be changed only in banks or directly at the reception in your hotel.
It is also worth paying attention to the following feature: exchange quotes are exhibited only for sale. This means that you can buy dinars you can, but sell back - no. Reverse exchange is carried out only at the airport and only upon presentation of the receipt of purchase, so do not forget to ask for it.
In the photo of the reception of the hotel, the scoreboard with quotes for sale on the right
It is worth noting that the Tunisian dinar consists of 1000 million. The most running coins in everyday life: 50, 100 millime, ½ dinar, one and five dinar. Of course, there are coins and a smaller nominal, such as one millime, but it is a big rarity, since they can not buy anything on them, but no one has canceled their walking. The most common bills are: it's five, ten and twenty dinar.
With bank cards in Hammamet, I think there will be problems. The fact is that in the city, remote trade is strongly developed, and the owners of outlets there are no terminals, and Tunisians such a people, which trusts more cash. If you can pay the card, then only in some stores in the Yinda area.