It is customary to shake hands and other normal courtesies should be observed. It is viewed as impolite to refuse an offer of Greek coffee or a cold drink. It is acceptable to bring a small gift of wine or confectionery, particularly when invited for a meal. For most occasions casual attire is acceptable. Beachwear should be confined to the beach or poolside.
More formal wear is required for business and in more exclusive dining rooms, social functions, etc.
A licence from the appropriate authorities, is required to photograph Museum artefacts, this can sometimes be purchased from the Museum's ticket desk. No flash photography is allowed in churches with murals or icons.