A bit more personal experience/comments on BoondockersWelcome:
That is the same paragraph I signed up for stating:"Confirmation that you'll be traveling in a self-contained RV is required to purchase or activate guest privileges."
At the time, I had my Sienna with SELF CONTAINED toileting. I KNEW I wasn't going to be needing outside facilities because BDW members generally only make accommodations for ONE NIGHT, and since I like driving more than camping... well; I wasn't lying. That was ? 3 years ago.
Yes, you can decide how many nights as a Host up to 5, but the site used to recommend that 1 or 2 is probably easier on both Guests and Hosts.
It is all set up for individual needs and communication. It's your life, so do whatever both parties agree to. Simple.
The BEST part about the entire arrangement is that both Guests and Hosts LEAVE COMMENTS/FEEDBACK on each other's pages for all to read. (Like Ebay, kind of - but better) Very unlikely that you would fall into a weird situation. And if you DO.. PLEASE for the sake of all other members, Post it!! (or alter you OWN Host page to indicate what you will/will not put up with). Easy!
I see no reason to get all up in the air and attitude prone regarding such a great site/opportunity to help with free travels and a more secure feeling, than other possibilities. (Seriously... Grab a portapotty and quit complaining.)
I'd also like to say: The site actually Recommends that if you are plugging in a huge rig, in summer with a/c, etc.; you should pay a a bit to your Host; and that Hosts should likely state that & amount per night, in their profile ahead of time.
I've never had a problem. Love my Guests and Hosts so far.
P.S. I have an acre and would like to host a small group as well..sometime... when I'm home in winter. So Cent. Texas.. but I'm thinking I'd do it thru my BDW page. Just sayin'.