As some basic rules are required to travel within the vicinity of your country or city, there are also some very basic rules of foreign travel as well. Courtesy and good manners are the same wherever you are. There may be some variations in customs, but you will find the person who is really comfortable at any event or in any situation at home.
The true gentleman behaves manly whether he is in his own country or abroad. Similarly, all should follow basic rules of humanity in all aspects of life, whether it is hospitality, trade or travelling. The first rule is politeness to all whom you may trade or interact. There are also some countries or places where there exists a cultural or political sensitivity that you must consider. There will be a few critical watchers wherever you go, so it is most important that you behave with courtesy and dignity.
After having long routine work, it is right of an individual to take a short rest at weekends. It is normal to want to relax and have a good time when on a vacation. During vacations you may demand to enjoy every moment of life. A good time is quite possible without being boorish, loud, or obnoxious.
While travelling to another country to which you are not familiar and also have not experienced its culture before, you may come across to various complications. Hence to avoid such type of situations you should not forget one point and that is simply cannot be over emphasized; when you are abroad, be tolerant and understanding. Understand why things are done in a different manner; do not gripe about it.
The next two reminders are to be friendly and modest. You should not forget to keep smiling where ever it is needed. If you are always peering suspiciously at everyone and not making any move to be friendly, they will respond quite the same (and you will probably complain that the people in such and such country are very unfriendly).
Before getting understanding of those people you should not ascertain any point of view regarding their behavior. First is your turn to give time for understanding to stranger and then see how they react. Modesty is always in fashion. In your dress and in your actions, behave quietly and mannerly in a foreign land.
Address people politely and thank them for services. Language is often a problem; however, people really do not mind you trying your high school or college German or French on them of you are courteous and polite and you let them know courteous phrases will go a long way in any country. If, however, you are really butchering the language and everyone is aware of it, apologize and try to get by in English.
Generosity also is a relative thing. You can be generous without being lavish or foolish. The locals will know when you have grossly overpaid and you will be surprised how many of them really do not wish to overcharge you.