We were able to go head first at the canopy zip line in Costa Rica, with two and three people, and upside down. This zip line is over 500 meters long and we were able to go right in between our hotel room and the pool as well. Would definitely recommend it if you are ever in Costa Rica. After spending time at Arenal Volcano we drove to Jaco Costa Rica and we were able to do some surfing! Pura Vida!
There are a lot more Costa Rica attractions as well and dont forget to take plenty of pictures on your trip!