I appreciate the sentiment and agree with a lot of these ideas, but I don't love the idea of trying to control my guests' behavior or adding yet another hurdle for hosts to have to "Green" their homes in order to comply with some arbitrary AirBnB rules that will undoubtedly go against hosts rather than for us. Obviously, we should all do our part as best as we can, but people simply have different habits, preferences, etc..
I also don't believe this nonsense about the world will end in 12 years. That's just silly. :). Still, we should be as environmentally conscious as we can - but that will vary wildly from one host to another for many reasons. Do you have several thousand dollars to upgrade your Furnace or A/C to one that's more "Green"? Does everyone have the ability to add solar panels? Obviously we all have different situations and what's do-able for one, is a hurdle for another.
There are certainly some simple things we can do (such as cut down on plastics, use eco-friendly products, recycle), but we can't expect all guests to comply. For example, I provide my guests with re-usable (washable) paper towels to cut down on waste. But I also provide them with regular paper towels. I encourage them to use the re-usable ones, but some people simply prefer the paper ones.
I don't think it's fair to hold Hosts accountable to a list of things that may not be feasible or might be cost-prohibitive for some hosts (such as non-plastic garbage bags) and I don't think it's fair to "force" guests to behave in a way that may not be comfortable for them. We should certainly nudge as best as we can, but I don't like the idea of adding so many extra rules. I don't want my guests walking on eggshells or trying to remember a long list of House Rules. I want to keep it as simple as possible, while at the same time, being as Green as possible.
My best advice for energy conservation in the home is to invest in Smart devices like Thermostats, LEDs, Smart Switches and Outlets, etc. - set rules and automation for the home and make it as easy as possible for guests. Obviously certain things are a no brainer, such as having a recycle bin.
Here is an example of what I'm working on for my Guests at the moment. Rather than creating a long list of "checkout instructions", I will automate some of these things for my guests so that they can all be accomplished with a push of a button at the door, when they check out. I will be installing Flic buttons in the home. Flic buttons integrate with Alexa, Google, Homekit and you can assign certain actions to the buttons. The buttons have 3 commands (single click, double click and press and hold). There are other companies that make similar buttons as well. So, you could create home automation such as the following examples:
Ask your guests to Single Click the button every time they leave the house. This can set off a series of commands such as Turn off All Lights, Turn off the TV/Stereo/Fan whatever, Set the Temperature, etc.
Guest Checkout - Guests Double Click the button when they checkout - Doors Lock, Home goes into "Eco Mode" or "Cleaning Mode" or whatever you set up. (Lights, appliances, air purifiers, robot vacuum, etc.) you can even have a text message sent to your phone letting you know that the guest has checked out.
You can also use this button to set up a "Welcome" mode - The guests use this when they check-in and it triggers a series of commands (such as turning on the lights if after XPM). You can also trigger a Welcome video to play on your iPad which can include some of these "encouragements" for Guests to be conscious about X,Y,Z during their stay. All of this happens with one push of a button.
I have found that it's just not realistic to expect guests to follow all the small rules (such as turning off all the lights when they leave). I'd rather have control of some of that in an app on my phone and make it as simple as possible for them (a click of a button).
We all have different use cases. I love the idea of 4 Garbage Bins but that is absolutely not feasible in my small home, there is no room for all of that, but I do have recycling setup. I think we should do our best to setup a home that is Green in the best ways we can, encourage guests and make it easy for them. What I think is a bad idea is to make AirBnB the arbiter, to create a "one-size fits all" set of rules and regulations. That will end in disaster, imo.