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