This is fairly general, but it’s a travel mistake that still happens nonetheless.
Get Your Documents In Order Before Your Flight
Before you even get on the plane, double-check your travel documents to ensure everything is in order. Most importantly, make sure that you have the necessary travel documentation such as visas, passports, identification cards, etc. on-hand and kept in proper fashion. Missing one or more of these important documents will likely spell the end of your trip before it even begins.
On the other hand, you should also make sure that your reservations and bookings have been settled before you take off. Always corroborate your time and location with your local guide (if you hire one), and make sure they are scheduled correctly.
Last but not least, do check that your name has been correctly spelt on your flight reservation. You would not want to be denied entry into your flight due to a silly typo.
Bonus Tip: Have a hard copy of your important travel documents with you at all times. You can also keep a digital copy in your smart devices to easily bring out if needed.