If you are planning your first trip to Costa Rica, I have a bit of advice, don't go to the Osa Peninsula. You'll ruin your follow-up trips, kind of like drinking 25 year old single-malt your first time. If you live here or have been here before, go. Immediately. Wait, read this first, then go. So what's the deal with Osa? Situated in the southwestern corner of Costa Rica it's one of the most d...