The first step to solving a problem is admitting there is one. This is what the Robinberrys did when we last saw them.
The second step to solving a problem is making choices on how to go forward. Or in the case of the Robinberrys, choosing the type of tourism that will create the least impact while still allowing them to do new and interesting things.
As we saw though this is no easy task and there are pros and cons for every available option.
Your task
Without thinking too deeply, or conducting an internet search, what type of alternative tourism is the most sustainable and why?