Arenal is the adventure capital of central America. You MUST go. We spent 4 nights, which was probably too much (i'd say do 3), and did zip lining, rafting, waterfall repelling, hiking, hot springs, and more. It's really fun. A great bonding experience for sure.
Proyecto Asis Animal Rescue Shelter where you'll be treated to an easy 30-minute walk through secondary rainforest. http://www.valledorad...vation.html