Additional transaction fees may apply for local residents. Guests may also be subject to additional taxes, which may vary by city and hotel. Information about the fees charged must be clarified with the accommodation facility. Parents or a legal guardian traveling with children under 18 years must present the child's birth certificate and an identity card with photo (passport, for example) at the check-in. For international travels to Brazil, if just one of the parents is traveling with the child, she/he must present – in addition to the child's certificate of birth and identity card with photo – a letter authorizing the trip signed by the other parent with a notarial certification of signature. In case the parents or the legal guardian, as applicable, cannot or are unwilling to give this authorization, a judicial authorization is required. People who intend to travel to Brazil with children must consult with the Brazilian consulate before traveling for more information. Up to 2 children 6 years old and younger stay free when occupying the parent or guardian's room, using existing bedding.