Restaurants
At a sit-down restaurant people typically tip the waiter 15% to 20%. It is customary that the tip be calculated on the pre-tax amount, but it is often easier just to use the after-tax amount. If a coupon or discount is used, you should tip on the full amount. If you don’t tip, expect to have an angry waiter chasing you out of the restaurant to explain yourself.
At buffets, a much smaller tip is expected for the server who brings beverages, typically $1 – $2 dollars per diner.
Drinks
A tip of $1 a drink is fairly typical whether you paid for the drink at a bar or got it for free from a cocktail waitress while gambling. It is fine to tip cocktail waitresses with casino chips instead of cash.
Maids
$1 – $5 dollars a day, maybe more at upscale hotels. Leave the tip with a note attached or in an envelope, or simply leave it on the pillow. If you’re really messy a bigger tip will be appreciated. It is best to tip daily to make sure that the maid who actually performed the service gets the tip.
Valet
Typically $1 – $3 dollars. Usually this is paid when your car is brought back to you, but some also tip when the car is parked.
Bell Staff, Porters and Skycaps
Anybody who handles your baggage for you will typically see a tip of $1 a bag, or $2 for heavier luggage.
Tour Guides
For an all day tour, people often tip $2 – $5 dollars for the guide if they did a good job.
Doormen
Often a $1 tip is given for hailing a cab.
Concierge
For a simple question or request nothing is expected, but $5 – $20 for a hard to get reservation or difficult arrangement of some kind is typical.
Room Service
15% to 20%. Gratuity is often already included on the bill for room service, so check for that first.
Front Desk
Front Desk personnel typically do not get tipped unless they provide some kind of exceptional service.
Many people try using “The Twenty Dollar Trick” at the front desk. They will give the front desk clerk a twenty dollar bill folded up with their credit card while asking for a complimentary upgrade. If the clerk does not give the upgrade they will give the twenty dollars back.
Taxis
15% to 20% of the bill, at least $1 for small fares.
Shuttle Drivers
$1 – $2 or more if they handle the baggage for you.
Dealers
There are several ways to tip dealers. The simplest way is to give the dealer the tip directly. Optionally, you can make side bets for the dealer. If you unsure how to leave a side bet, ask the dealer and they will be happy to explain how to do it. Often players leave a tip when they are leaving the table. The amount of tip varies greatly depending on how much you are playing and how much you are winning.