Visa requirements for Costa Rica change rapidly so please see the Migration guidelines Migration_Guidelines
Here is a link to Costa Rican embassies abroad:
TRAVEL ASSISTANCE APPLICATION
Please find Application for Travel Assistance for WILPF Congress 2011 in Costa Rica
Application for Travel Assistance
Please note that financial aid is only given to sections from low income countries.For more information on which sections are eligible for travel assistance please contact Nancy Ramsden at email@example.com.
IMPORTANT: Application must be received by firstname.lastname@example.org before June 1, 2011.
If you need an invitation letter/visa letter for your applications process please contact Karin Friedrich, email@example.com. Please note that the Visa process can take time especially during the spring and summer months.