Eco-friendly rest is not only inaction but also some actions towards nature conservation. Only we can make our vacation sustainable or ruin this idea in the bud, even in the most eco-friendly place.
I'm sure you all know that you can't litter anywhere. But you can not be limited to this. Eco-tourists also collect garbage themselves. Going out in the morning for a walk or just seeing someone dropped a piece of paper, it is not at all challenging to pick it up and throw it into the trash can. Isn't it true?
Also, try to conserve nature in less obvious ways. After all, the less a person interferes with wildlife, the better. Therefore:
Skip hunting and safari. By themselves, these activities are not sustainable. Murder or rush for fun is not humane. Even if you are offered to hunt legally, with all permits, and to maintain the balance of the population, refrain, leave it to the professionals.
You definitely can't buy souvenirs made from bones, shells, skins, and other animal parts. Yes, they may look authentic, but the demand for such souvenirs provokes poaching. For the same reason, refrain from game dishes.