We will be staying at the Hilton in Jan. and I'm wondering how long it takes to go to that Arenal volcano? We will be looking to take a tour with a tour group once we get down there. Also someone else mentioned they had a really nice ride down a river and they saw howler monkeys and all kinds of wonderful flora and fauna. Do you know if there is such a trip near where I am staying? We will be there 2 weeks and hope to take say 3 tours such as the ones mentioned above. Any other suggestions or links that I can follow to see what is available? I'm nervous of heights so probably couldn't do the zip line. Thanks for any help!