If you are wine drinkers definitely try the Croatian Reds
There is a grape called Crljenak Kaštelanski (most just call it Crljenak – pronounced Try zurl-yen-ak)
It is the DNA parent to three wines that are a little more popular – Zinfandel (US), Primitivo (Italy), and Plavac Mali (Croatian).
I have had Crljenak a couple times and it is ok, but oh my - Plavac Mali is wonderful! It is a big red so most of the time it definitely needs to be decanted.
Just like any other wine you can find them at all price levels. If you want to splurge one night treat yourself to special meal and give Plavac Mali a shot.
But most of all enjoy the trip!
