If you are traveling to Costa Rica with Canadian passport in most cases you do not need to obtain entry visa to Costa Rica at the consulate beforehand. The period of stay though may be limited by the laws of Costa Rica. You may check what is the allowed period of stay at the Costa Rica consulate in Canada. All other applicants should check information on Costa Rica visa requirements, procedure, application forms, fees and processing timings may be found here: http://costa-rica.visacenter.ca.