Tipping need not be considered mandatory or automatic. Too often, tips are taken for granted or expected regardless of the quality of service. Tipping should be done at your discretion and as a reward for good or superlative service. It is good etiquette and common courtesy, as many people working in service positions rely on tips to make a living.
1. Tip the taxi driver who takes you from the airport to your hotel.
2. Tip the valet attendant who parks your car. If you rent a car at your destination, it's customary to tip the valet attendant at your hotel.
3. Tip the doorman a dollar or two, if he holds the door for you--more if he offers to help you with your bags. Tip the bellboy a dollar for each bag that he carries to your room. Add a few dollars extra if he doesn't use a cart or has to make 2 trips.
4. Tip the waitstaff 15 to 20 percent when dining out. Tip even more for excellent service. Tip the busboy a few dollars if you see he's working hard.
5. Tip room service only if you see that the gratuity isn't already added into your bill.
6. Tip wisely when traveling abroad. Research before you leave on your trip about tipping expectations in your destination. Though in most countries, tipping 10 percent is customary and expected, in other countries such as China, tipping is illegal.