Restaurant server: 15% – 18%, 20% for good service, 10% for poor service
Bartender: $1 per drink or 15% of the tab, whichever is greater
Valet: $2 to return your car
Restroom attendant: 50 cents to $1
Taxi driver: 15%
Food delivery: 10%, at least $1. Tip more if the delivery was difficult (e.g. bad weather)
Barber or hairdresser: 15% – 20%
Skycap: $1-2 per bag, $2 minimum
Hotel doorman: $1-2 per bag, $2 minimum
Hotel concierge: $5 for getting reservations, no tip for directions
Hotel housekeeper: $2-5 per night