What percentage of Costa Ricans speak english ? How much cash should I take? What is the best way to exchange dollars for the Costa Rican currency and what are their dollars called? I am going for one week and will rent a car. I want to get a feel for what it cost for short term rental two to three months a year. I'm not sure i can manage to live in C.R. year round cause my wifes pension only continues as long as we live in NY