This guide attempts to cover most situations that you, as a tourist, will encounter. One important local custom that every visitor should understand is tipping in Guam. Hopefully using these ‘tips’ will provide a smooth experience when interacting with locals in restaurants, bars, hotels, tours, and taxis.

The currency on Guam is the US Dollar. Banks and ATMs are available throughout the island. The PIC Front Desk exchanges the following foreign currencies: Australian Dollar, Canadian Dollar, Hong Kong Dollar, Japanese Yen, Korean Won, Philippine Peso, and Taiwan Dollar. There is a daily limit for currency exchange at the Front Desk. Most banks and Currency Exchange Kiosks (located within some malls) will exchange foreign currencies.

Tipping in restaurants is expected at restaurants in Guam where a waiter brings you your food. Before you add a tip on top of your bill, though, it is important to bill, many restaurants will add the service charge to your bill. The service charge can vary, but it's generally 10% - 15%. If there service charge has not been added, you should tip your waiter 10-15% of the bill for good service.

At the bar you should leave a tip of 10% of the total bill. That’s whether you’re running a tab or paying as you go. Before you leave a tip, remember to check whether your bill already includes a service charge! If there is a service charge, feel free not to leave a tip.

Tipping is optional at hotels in Guam with the exception of the bellhop/luggage porters who will expect a small tip for taking care of your bags.

While you don’t have to tip the other hotel staff, you can leave your housekeeper and the concierge tips at your discretion. If you’re tipping your housekeeper, make sure to leave the tip each morning as the housekeepers can change daily.

Although you don’t have to tip your tour guide in Guam, it very common to do so. If it’s a group tour, there might be a group tip collection near the end of the tip which makes tipping even more common due to social pressure.

If you want to leave your tour guide a tip for a half-day or single-day tour, consider tipping 5% - 10% of the cost of your tour. A 5% would be for a good tour while 10% would be for an exceptional one.

If you’re in Guam as part of a tour package, you can leave a tip of $5 per person per day for a half-day tour and $10 per person per day for a full-day tour.

Although you don’t have to tip your taxi driver, tips are appreciated. If you want to leave a tip, consider rounding up the taxi fare at the end of the ride. For example, if the taxi cost was $18.50, you could leave the taxi driver $20. Your driver will be happy with that tip and you should only tip if the driver was professional, drove safely, and helped you with any bags you might have had.

Yes, you should tip at spas in Guam if you received good service during your spa treatment or massage. The average tip is 10-15% of the cost of your spa treatment. Only tip If you were satisfied, though, since tips should be connected to the service you received.