Visiting Guam
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Guam uses the US Dollar.
Guam uses ungrounded North American and grounded North American sockets. Their devices run on 110 Volts (60 Hertz).
Guam
Drinking Water
Tap water is unsafe for consumption
Stick to sealed or boiling-hot drinks. Avoid ice or anything that may have touched tap water.
Guam is in the Pacific/Guam time zone, or UTC+10:00.
Guam
Tipping Culture
Tipping is most of the time expected
As a (non-incorporated) U.S. territory, Guam shares a similar tipping culture. However, in Guam, a 10-15% service charge is sometimes included. Be careful to not tip twice!