Two pieces of body language that can cause unintentional offence are hand gestures; don't hold your hand up, palm out, to anybody, and don't make an OK sign by forming a circle with your thumb and forefinger – both are extremely rude.
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Thumbs-Up. Avoid using this gesture in: Afghanistan, Iran, parts of Italy, and Greece. The gesture of 'Thumbs-up may look cool on Facebook or USA, but in Afghanistan, Iran, parts of Italy, and Greece, it means up yours. So, to avoid any awkwardness, next time you must reconsider what you are doing.
Not only will you be expected to eat everything off your plate, but you should also compliment the chef by asking for seconds – even if you're stuffed!
Greeks are warm and hospitable. When meeting someone for the first time, they shake hands firmly, smile, and maintain direct eye contact. Good friends often embrace; they may also kiss each other on each cheek. Male friends often slap each other's arm at the shoulder.
Tipping is a common practice in Greece, especially in the hospitality industry. It is a way to show appreciation for good service. It's recommended to have cash on hand for tipping purposes. While some establishments accept credit cards, it's easier and more convenient to tip with cash, especially for smaller amounts.
Eye Contact: Greeks usually expect direct eye contact to be made during conversation – try and meet their gaze when you talk to them. Eye contact conveys sincerity and honesty. Gestures: The hand gesture that signals 'Okay' (by putting one's forefinger and thumb together to make a circle) is an obscenity in Greece.