The guide was a nice guy and had great knowledge of the frogs, lizards, and spiders he spotted. He took pictures using phones from people in the group so we all have good pictures. We saw two glass frogs, which he said are difficult to find. A woman in our group really wanted to see Costa Rica's famous red-eyed tree frog, so the guide was making "frog call" noises to find it, and he did! It was really amazing to see this beautiful frog at night. We did not walk over the hanging bridges on this tour. There is a big pond on site with so many bullfrogs, which was entertaining.
It rained the entire tour. I brought a big umbrella and was able to use that along the walk, which prevented me from getting soaked. My kids and I wore running shoes, and parts of the walk (near the pond) were a little "soggy" so our shoes got wet, but not a big deal, in my opinion. One person in our group wore Teva sandals and I think she regretted it. I recommend close-toed shoes. I also recommend pants because there were bugs, and they were attracted to the flashlights everyone carried. I don't know if the bugs were the biting type, but I was glad I was wearing pants and a long-sleeved shirt. My kids weren't wearing pants, but wore tall soccer socks and pulled them up past their knees (with long shorts), and that worked well.
We did not wear masks, which was very appreciated. We could actually hear and understand the guide. The entire tour was outside, aside from the bus ride up. We did not take the bus, but I think people wore masks on the bus.
They have a covered area where everyone starts and finishes the tour, and this is where we ate dinner (beans, rice, fried plantain, little salad, water, pineapple cinnamon juice, starfruit juice). As a parent, it was convenient that they fed my kids after the tour because it was a late night for them, and we didn't have to worry about food when we returned to our rental house.
This is a neat experience I recommend for seeing frogs, lizards, and spiders. We didn't see any snakes, but were told other groups have -- it is just a matter of luck I suppose.