I had the opportunity to spend a week riding around Costa Rica last March/April. The incredible scenery and food were surpassed only by the friendly, welcoming people. I also crossed in the Tambor III, and the Nicoya Peninsula was a highlight of the trip.
There is a link to the ride report in my signature line in case you are interested.
For now, I will ride vicariously through your report and try to forget about the freezing weather here in DC.