Mains voltage is 110 V, so some appliances may require special adapters. It’s recommended to search for them even before you go to avoid wasting precious time looking for specialty stores.
Indigenous people can communicate not only in English, but also in Spanish; many locals know it. Employees of hotels and large restaurants often speak other foreign languages too.
Tourists who expect to attend local diners have to consider that tipping is mandatory. The size of tip depends on the status of the restaurant and can reach up to 25% of the total; a tip less than 15% is simply indecent.
Many foreign visitors can notice smiles that are literally stuck to faces of locals. Take it not as a boundless desire to mingle with new friends, but as a usual gesture of courtesy, which is recommended to foreign guests too.
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