Hey all, American planning on traveling to Montenegro/Albania/Greece in early April. I am curious if I need anything other than my passport to cross the borders between the countries? I will be there a total of 1 week and plan on renting a car to travel. We are going to be doing Bay of Kotor, Vlorë and Thessoloniki.

Also, what are some must try foods/restaurants in the areas?

And one more thing, is the water okay to drink or should I be wary of that? Hvala! faleminderit! ευχαριστώ!