For a tourist, the Schengen Agreement is more important than the EU region. Traveller doesn’t need to go through the immigration check.
I travelled to Croatia in 2007. Even though Croatia didn’t join both the Schengen and EU, there was no immigration. I worried I couldn’t get the stamp.
Anyway, I hope other Former Yugoslavia countries will join the EU following Croatia and the world would become peaceful.
¶Although Croatia on July 1 has become the European Union’s 28th member state, the Croats themselves, as a whole, are far from jubilant about this historic step. It is, however, a step with a signal effect. […] ¶From an economic point of view, the EU is now shouldering a new burden by taking Croatia into the fold. The country’s economy has been in recession for years and unemployment is at about 20 percent. On the other hand, various long-time member states had similar, or even greater, problems. ¶EU entry will not make Croatia prosperous overnight, but it will position the country for competition, says Prime Minister Zoran Milanovic. “I am convinced that Croatia can meet all the challenges European integration and globalization mean for such a small nation,” he said. “Small nations must be open and the European Union has granted Croatia a great opportunity.” ¶The opportunity includes financial support. As early as February, European Commissioner for Regional Policy, Johannes Hahn, predicted that “EU regional funds will account for up to 70 percent of public investment in Croatia” after accession. What is important, the commissioner said, was that “people feel the benefits in terms of jobs and growth as soon as possible.” […] .
Full text is here. Referenced from Deutsche Welle, 1 July, 2013