What Would You Tip Me?

Hotel Staff
Bellman/Porter
$1 to $2 per bag, $5 minimum. (Or, just as many places say $1 bag, $2 minimum.)
Concierge
$5-$20 depending on the service. $20 if he does something exceptional. Nothing for directions.
Housekeeper
$2 to $5 per night, paid daily or as a lump sum at checkout. (Most sites suggest you tip daily.)
Parking Valet
A wide range of opinions. Everyone agrees that you should pay when your car is retrieved. Some say to pay when it’s parked, too. Most sites say to tip $2, though some suggest $5.
Room service
$5 minimum (unless gratuity is included in check)
Travel
Bus driver (not mass transit)
$1 to $2, if she handles luggage
Cab driver
10%, $2-$5 minimum
Chauffeur
10-15%
Gas station attendant
Nothing. Or $2-$4. There’s no agreement. (I’ve never seen anyone tip a gas station attendant ever.)
Porter/skycap
$1 per bag. $2 for heavy items, or if porter brings luggage to counter.