Those little displays of affection that many of us take for granted such as holding hands, hugging or kissing in public are frowned on in many places. Its important to know where you can hug and where its prudent to wait until the privacy of your hotel room.
Learning about the customs of your destination is essential to do business. Get it right and you will be treated as a respected guest, always welcome to return.
In this time of heightened security in many parts of the world avoiding trouble and attracting attention-by observing the standards of local behavior- is more than a matter of courtesy.