In the United States Golf Association's Rules of Golf, the first subject addressed is etiquette, before any discussion of rules and definitions. Golf is a game that involves discipline, integrity, companionship, and competition.
Play it with character--and help your attendees do the same.
Safety * Before taking a practice swing or hitting a shot, make sure that nobody is standing in a position to be hit by your club, the ball, or any stones or other objects you might move when you swing.
* Yell "Fore!" if you see your ball heading toward other people.
* Watch your temper: Throwing a club in anger won't improve your game, and it could be dangerous.
* Golf cart accidents do happen. Use common sense; drive the cart by the rules.
Consideration for Other Players * The player with the lowest score on a hole has the "honor," and should be allowed to hit first on the next hole.
* Don't move, talk, or stand close to or directly behind the ball or hole when a player is addressing the ball, swinging a club, or putting.
* Don't drive your cart or walk ahead of other players before they hit their shots.
* Watch your ball. Look for landmarks that will help you find it.
* Help the others in your group spot their balls as well.
* On the green, don't step between another player's ball and the cup.
* Take your ball out of the hole with your hand. Don't use your putter--it could damage the cup.
* If you're playing badly, don't over-complain; it affects your fellow players.
Pace of Play * Be ready to hit your shot; don't wait until your turn to choose a club or line up a putt.
* Keep up with the group in front of you.
* Don't spend more than five minutes looking for a ball.
* When the last person in your group has putted out, leave the green immediately. Drive or walk to the next tee before counting up your strokes or writing scores.
Care of the Course * Rake the sand trap before you leave it.
* Replace your divots. Your golf cart may have a container of sand and seed you can use for this.
* On the green, repair your ball marks. (Many golfers make it a habit to fix one extra ball mark on each green.)
* Don't damage the green when you put down the flag stick or your bag. Don't lean on your putter (it could make a dent), and replace the flag stick properly in the cup.
* Follow the local course rules, which explain where you can drive your golf cart.
* When you take practice swings, on the tee or in the fairway, repair any damage you cause.