Wedding lodging - Green hotels?

Is it just greenwashing? You be the judge. From their website:
"Green" Hotels are environmentally-friendly properties whose managers are eager to institute programs that save water, save energy and reduce solid waste--while saving money--to help PROTECT OUR ONE AND ONLY EARTH!

WHO WE ARE: "Green" Hotels Association's® purpose is to bring together hotels interested in environmental issues. From adding "Drinking water served on request only" to the menu to installing new HVAC systems, and with every measure in between, "Green" Hotels Association® encourages, promotes and supports the "greening" of the lodging industry.

HOW WE HELP: General managers, chief engineers and executive housekeepers do not have the time to search out all the environmentally-friendly water saving, energy saving and solid waste reducing ideas that apply to the hospitality industry. So, "Green" Hotels Association® has dedicated itself to that purpose. On joining, members receive the very comprehensive 135+ page Guidelines and Ideas packed with great ideas options and techniques revealing how to reduce bills as well as the hotel's impact on your beautiful destination.

So - they get a brochure. But have no real standards. Go to their list of inns and see what you think, it's arranged by state. In NY, the Algonquin Hotel is listed. I love the Algonquin. So did Dorothy Parker. I love their resident cat. I'm not entirely certain that they are following a carbon-neutral management plan, though. I could, of course be wrong. The lights ARE very low in the lobby, the Oak room, and the bar. I don't know how the nonagerian waiters can see. I'd ask a few more intense questions before I'd suggest to wedding guests that these hotels are eco-friendly.