I should convince my grandparents to write a book on travelling.... They have been to every continent but Antarctica and have been to so many different places, I couldn't even begin to name them all. That is all they do is travel.
Some things my grandma has mentioned to me over the years:
-All currency get out prior to going, don't want to get stuck without a way to pay for things and might be hard to find a place to change currency once there.
-Try to avoid using US credit/debit cards in other countries, they can work, but you will get charged an arm and a leg for it.
-Don't expect US electronics and straighteners/curling irons/etc to work in other countries. Check labels and voltage information for the country you are going to and what you straightener can handle... then determine if you need to buy one over there or just need an outlet adapter.
-Be careful, be respectful and know the culture of where you are going beforehand. You can get into a lot of trouble in some areas by doing something that is completely harmless in our culture, but not good in their culture.
-Watch any purses, backpacks, etc you take with. People watch for travelers and things get stolen easily from travelers and the country doesn't have to be a "bad" place for this to happen. Pit pocketers are smart and fast, a rubber band around money/credit cards or a wallet as well as not putting anything in a back pocket can really help. Also, if you carry a purse, try to find one that has metal underlying the bottom, people often steal by cutting through the bottom of a purse and all contents fall out and the purse owner is not aware.
-If staying in any hotels by yourself a door stop alarm. Put behind a door if it is opened it sounds off an alarm. Has saved my grandparents from intruders on a few occasions now.
Overall, be safe, keep an eye out, research where you are going before hand, where you need to be, what is the safest way to get to where you need to go and have fun!
Some of the above might not apply specifically to where you are going, but just be aware that travelers are prime targets of theft because they are often distracted.