This is great for taking time to eat or letting kids run out and around for a while.
You will need a visa in many countries around the world so you can gain entry into the country. Some countries have an extensive process to grant visas. Apply for the appropriate visas long before your departure. Once again, without having the right kind of visa, you won't be able to get into certain countries.
When taking a trip and using traveler's checks, it is important that you cash them before eating or shopping.