When packing, lay out all the clothes and money you plan to take. Take half the clothes and all the money.
Don’t wear white. Tourists wear white.Learn the local customs or risk looking like a dick. Insure the rental car.
Just because you are on vacation does not mean you’re invincible. Keep your ass out of the riptide.
Make eye contact. Cultivate patience. Don’t pay to park.
If you have a complaint, rather than demand a certain response, empower the person to whom you are complaining to solve the problem. They will often offer you more than you would have asked for in compensation, especially if you learn to complain with kindness.
Frequent hygienically-sound food trucks.
Understand you are a target for crime when traveling. Be prepared to shank a bitch if need be.