We are staying in Nuevo Arenal in April and would like to spend a few hours one day on the lake. Just a relaxing float type activity. Is this activity worth doing if we want to see birds and other creatures? What are the names of the companies that provide that service? We are spending two weeks exploring all of Costa Rica, so we will see a lot of animals and birds in many of the places, but just wondering if a day or a few hours on the lake would be a worthwhile activity. Thanks!