Beach List Vacation

Some countries requires that your passport has at least 6 months validity left.

Reconfirm your flights as there may be airline schedule changes. Your return flight must be reconfirmed at your destination directly with the airline 3 days prior to your departure.

Make sure that your luggage has a tag with your name, address, and telephone number. Tie a colorful ribbon or attach distinctive stickers to your luggage so that you can identify it easily, and other travelers will not take it by mistake at a busy terminal.

Many countries demand that you have such a certificate when you enter their borders.

Remember to keep a close eye on the passport copy - it's a great asset if you lose the original, but can also be used to steal your identity if it gets into the wrong hands.
If you have a web based e-mail platform, e-mailing yourself scans/copies of important documents and passport info is a great alternative to hard-copies. It's easier to access, less likely to be stolen, and guaranteed to always be on hand.

In case all your money, or all your gear, is lost or stolen.

Memorize PIN codes to credit cards so that you can use them with ATM machines to get cash.

Where pickpockets are a problem, carry your wallet in your front trousers pocket.

Ask your doctor to provide you with a letter for any prescription medications that you are taking with you. Keep medicine in original containers, if possible.

For international travel: consider unlocking your cell phone SIM card so you can use your phone there (purchase a local SIM in your destination).