The customary tipping rate for taxi drivers is 15%, with a minimum of $2; bellhops are usually given $2 per bag in luxury hotels, $1 per bag elsewhere. Hotel maids should be tipped $3 or $4 a night for rooms that cost up to $250 a night (before taxes), $5–$7 a night for rooms in the $250–$350 range, and $8–$10 a night when you stay in more-expensive lodgings. If the hotel charges a service fee, be sure to ask what it covers, as it may include this gratuity. A doorman who hails or helps you into a cab can be tipped $1–$2. You should also tip your hotel concierge for services rendered; the size of the tip depends on your request and the quality of the concierge's work. For an ordinary dinner reservation or tour arrangements, $3–$5 should do; if the concierge scores seats at a popular restaurant or show or performs unusual services, $10 or more is appropriate.
Waiters should be tipped 15%–20%. Many restaurants add a gratuity to the bill for parties of six or more. Ask what the percentage is if the menu or bill doesn't state it. Tip $1 per drink you order at the bar; at an upscale establishment, those $15 martinis might warrant a $2 tip, however.