Dear Sir or Madam,

We are [SEU NOME] (passport [NUMERO DO PASSAPORTE]) and [OUTRO NOME] (NUMERO DO PASSAPORTE), a brazilian couple who is travelling in Asia. We would love to visit Brunei in our trip, so we are requiring the visa. We plan to arrive in Brunei on [DATA DA SUA CHEGADA] by bus from Miri (Malaysia) and leave on [DATA DA SUA SAÍDA] by ferry to Labuan (Malaysia), and then continue our trip in Malaysia and then to Indonesia.  The bus, the ferry and the accomodation we will use in Brunei are already booked and paid. We have credit cards, debit cards and US dollars for the other expenses we shall have in the country.
The reason of our trip is tourism. 

Our best regards,
ASSINATURAS


(use essa carta como referência. Atualize as informações de acordo com a sua viagem. E desculpe os erros de inglês - o pessoal do consulado aceitou numa boa :)