To enter another country, you're gonna need a passport. You do not need a passport or visa to lock in a trip, but you will for the travel itself. Some tips that will be useful:
• Book with your complete first, middle, and last names. Make sure your birthday appears exactly how it will on your passport.
• If you have a passport, make sure it's valid for at least 6 months after your tour ends.
• It's your responsibility to review entry requirements for your destinations and provide any documents you may need. Remember to check all countries, even those only visited in transit.
Want more info on international travel and passports? Turn to the experts at travel.state.gov.