At Restaurants: A 10 percent tip is included. "The locals will also throw down any loose change," says Diane Embree of Michael's Travel Centre in Westlake Village, California. "I tell Americans they should do the same, up to maybe 15 percent total."

At Hotels: A 10 percent service charge is included, "but my understanding from talking to locals is that employees sometimes don't see it," says Embree. Thus, it's okay but not required to hand out a dollar or two here and there to porters and cleaning staff. "It doesn't mean that much to us, but it means a lot to them."

Guides and Drivers: Guides should get $25–$40 per couple and drivers half that. Tip taxi drivers about 10 percent.

Dollars Accepted? U.S. dollars are accepted, but rupiahs are preferred.

P.S. If you go rafting or take an elephant ride, a modest tip is greatly appreciated. Ditto for spa services—think 15 percent.

Source : CNTraveler.com