The electricity supply is 220V, 50hz, so visitors from the United states, Australia and UK will need to use a transformer to run electrical appliances.
The currency in Croatia is kuna: 1 euro is approx. 7,2kuna
Kuna (HRK; symbol Kn) = 100 Lipa. Notes are in denominations of Kn1,000, 500, 200, 100, 50, 20 and 10. Coins are in denominations of 5, 2 and 1, and 50, 20, 10, 5, 2 and 1 lipa.
It is not possible to pay in euros anywhere in Croatia.
There are plenty of exchange offices around Dubrovnik, as well as an abundance of ATMs that operate 24/7. Many bars, restaurants and cafes accept credit cards, but not all, so be sure to have a reasonable amount of cash on you.
Tipping in Croatia is becoming more commonplace, especially in upscale restaurants. In the past, tipping was welcome but not expected. Today, however, in newer, upscale places, an extra 10% or 15% is considered polite. Croatians usually round their bill up to the nearest whole number when they want to tip. In informal restaurants in smaller towns and coffee shops, tipping is rare and not expected, but most people leave any coins they receive in change.
A couple of thing to keep your mind of:
Keep in mind that 1990s marked with Serbian aggression and Croatian-Serbian bloody and brutal war is still a painful subject, but generally there should be no problem if you approach that topic with respect. Visitors will find that domestic politics and European affairs are everyday conversation subjects in Croatia.
Socially, displays of affection among the younger generation are the same as Western European standards, but the older generation (over 65) still are quite conservative.
When driving on rural roads, particularly where a driver has to pull in to allow you to pass, it is customary to wave a thanks to the other driver, by raising your hand from the steering wheel.
Most Croats will respond to "thank you" with something along the lines of "It was nothing" or "not at all" which is equivalent to English "Don't mention it".
Do you want to spend your holiday helping others?
Croatia is the destination of many worldwide volunteer organizations that send groups of volunteers throughout the year to help with agriculture, community development, education, animal welfare, and more. These programs are put together by nonprofits, community groups and volunteers to help locals improve their economy and way of life. With rich cultural history and stunning coastline, Croatia is truly is the jewel of eastern Europe. If you would like to travel to Croatia as a volunteer, visit these websites for volunteer programs, accommodations, travel dates, and tours.
Volunteers Centre Zagreb