Will be taking a cruise to Turkey, Ukrane, Romania and Bulgaria in the fall. Have never been to this part of the world.

Do you recommend converting USD to the local currencies of these countries, or will Euros generally be accepted? Seems like all the tours we booked, the operators requested payment in Euros.

Also, can someone give me a general idea of how much items cost (for example, how much would you bring for some lunch and walking around money)? This will give me an idea of how much to exchange.

Thanks!