Cultural differences are just something you have to experience for yourself because its more fun. Greeks are good people so there is nothing to worry about. Overall Impressions Overall, despite the fact Greece has many quirks, it is by for the best city in all of Europe I have ever visited because it is safe, interesting, and very warm and friendly. Greeks are very laid back and like to have fun, that's why sometimes things don't run the way they should. You'll always see stray dogs everywhere but they are no worry.
Traffic is very crazy so watch that.
The weather is beautiful, the islands even more, and the people the most. It is a nation you will fall in love with as long as you learn to take life with a big smile and open mind.