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What is inside
- The five sectors: Sirena, San Pedrillo, La Leona, Los Patos and El Tigre, with access, daily caps and what each is best for.
- Fees and budget: park entrance, day tours and Sirena overnights, with what each price includes.
- The seven booking steps and the most common mistakes.
- Five questions to ask before you pay any operator.
- What to bring and how to stay safe on trails and boats.
Sector status and prices were verified in October 2026 with operators and official sources (SINAC). Sectors can change, so confirm with your guide. The sheet contains no affiliate links.
Want the whole region? Get the free 14-page Osa Trip Planner.