Planning To Visit Vancouver

Are you talking about Vancover WA, or Vancover BC? If you are going up to Canada, it will be no problem for you to go to a US bank and exchange your money for Canadian dollars. There are few places in Canada that will accept the US dollar. Or you can also exchange your money into Canadian dollars in the USA a couple of days before you leave, or you can purchase travellers checks, which are accepted just about everywhere.