Though Antigua and Barbuda is a very safe place, secure your purses and wallets. Walk only with the necessary money, avoid street urchins and vagrants and don't be afraid to ask for help. If you rent a car, park in a well-lit area.
While in St. John's, be mindful of casino scams. The Keno Palace Casino on St. James street runs a variation on the "Razzle Dazzle" game in which a woman will try to lure you in to the Casino with the promise of free bets. The game they bring you to involves pulling balls out of a hopper, with the ultimate goal being to tally a score over 100. You'll appear to be doing quite well at first, and will be enticed to bet real money to chase the cash pot. Before you know it, you may be out hundreds of dollars chasing a prize that you'll never win. Avoid this scam at all costs.
Avoid taking unusual risks, eat more from packaged goods. However the public market is a great place to mingle and get inexpensive provisions.
There are some signs on the road of St. John's, providing you with the ten principles of healthy living:
Give and receive love
Take your time