People in Las Vegas provide a service to you that make your stay more pleasurable. It’s a simple thing and rewarding that service is expected. A couple of dollars to anyone who is helping you out normally does the trick. But it gets confusing sometimes so here are a few guidelines. Remember, these are just tipping guidelines, don't feel compelled to tip when the service is bad but don't hold back when someone has done a very good job.
Gambling and the Dealers
A good rule of thumb: if you're winning and the dealer is making the experience enjoyable, you tip. If they are bothered with the thought of conversation, don’t tip. Some dealers will keep an eye on you and help you get as close to winning as possible. You can tip during the action or you can tip as you leave the table, that's entirely up to you. Ask the dealer about their preference for tipping. Some are gamblers and some are not.
If you win a pot, send a chip over to the dealer. They deal the cards and they have to put up with abuse from the players. A good dealer can split pots and keep the game going while a bad dealer can let things get out of control. Most Las Vegas dealers are very knowledgeable so drop a few chips in their pocket.
Tip them regardless of luck. Drinks are free and these girls typically will keep coming back as long as you are kind to them.
A dollar or two per drink is fine.
Tipping a taxi driver $2 is customary below fifteen dollars. If you have a driver who is taking the long way, make sure to point it out. Don't tip anyone who long hauls you, or who drives like a maniac.
Tip $2 per bag up to about ten or twelve dollars.
At the Buffet
It is customary to tip one to two dollars per person in your party for drinks and the clearing of dishes.
Some buffets have eliminated beverage service and have made it self-serve as well, for that you tip $1 for the clearing of plates per person in your party.
Always tip 15% for good service and more for great service. Remember, if someone has been bad, there is no need to reward them for their poor service. However, if a server makes your dinner legendary, go ahead and reward them for the good work.