We are pleased to hear that you enjoyed the zip-lining tour in the rainforest.
Regarding your other comments, we are not entirely clear on their nature, but I will address each of your concerns.
First, it is nearly impossible not to see at least one of the waterfalls included in this tour. The “La Paz Waterfall” is situated just a few feet from the viewing area where we stop. The second waterfall, San Fernando, is observed from a distance and, while it is occasionally obscured by fog, this happens only once or twice a year. Given this, we are puzzled as to how you did not enjoy at least one of the waterfalls.
As for viewing the volcano, please note that if the weather is cloudy, visibility of the volcano is not possible regardless of which one you visit in Costa Rica. This is completely beyond our control.
Regarding the hot springs, the tour description clearly states that they are manmade pools filled with natural hot water from the volcano. Additionally, pictures of the pools and further details are provided in the product presentation for you to see before purchasing the tour, but if these details were overlooked, unfortunately, there is little we can do to address that.