An extremely simple way to help save the rainforest and the the oceans that they drain into.
When you make reservations at hotels here in Costa Rica, ask them how much of their property is green. Whats their green number. What percentage of their land is forest or regenerating forest. Did they cut every last square meter of their greenery for your room or is the place a habitat for wild animals and plants. Do they keep exotic pets or or help the locals. Ask em.
If the hotels know your asking they will start growing things and stop chopping them down.