Many travel books and websites offer gratuity guides. While they’re not all exactly the same, most don’t vary much.
These are recommendations some taken from a variety of sources.
Hotel Shuttle Driver: $1 to $2 per person or $5 per party
Valet: $1 to $5
Bellstaff or Porters: $1 to $5 per bag, especially if you have heavy bags
Concierge: Varies, depending how involved or how much you ask for
Housekeeping: $1 to $5 per day
Room Service: Check to see if it is already added. If not, add 15 to 20%
Waitstaff: Check to see if it is already added. If not, add 15 to 20%
What do you tip? Does it vary from trip to trip or do you try to keep it the same? Are there times when you don’t tip, based on poor service?