Darryl wrote:

A couple of thoughts on that:

1) Would airports really let passengers, even if they arrived on their
own plane, hang around all day and night outside the terminal but
inside the airport perimeter, basically unsupervised?

you might eventually get the same problem you see with marinas: it is
difficult enough to find a place to park your boat, but try finding a
place that'll let you live in it...

Ok, there are still quite a few small airports, that will let you
camp near your aircraft; so if you really want to be self sufficient,
it might be even easier to pack some camping gear in your aircraft;

When I was a wee lad hanging around gliding clubs in France and
its viscinity, I have seen some folks doing things like that,
i.e., traveling along with camping gear in the back seat of their
Jodel (or even gliders!... it can be done with good planning and
if you live in a place with a good enough density of gliding clubs
capable of launching you back to your next stop); a nice way
to spend a vacation...

--Sylvain