All visitors holding a valid passport and either a return ticket or a ticket to another destination outside the Philippines may enter without a formal visa and stay for 21 days. If one wishes to stay longer, a Visa Extension must be obtained either before the trip from a Philippine Consulate or Embassy, or, once in the Philippines, from the bureau of immigration. Casual attire during the day for women is light blouses and shorts. For men, collared T-shirts worn over slacks. In the evening, skirts are substituted for shorts and the T-shirts are tucked in.
Public phones are plentiful.
The water in Metropolitan Manila is generally considered potable. Bottled spring water or mineral water is often supplied by hotels and resorts and sold in all grocery stores. Many of the major tourist hotels also have 110 Volts AC outlets. Anti-Malaria tablets are recommended for travel to remote areas.