For me, what really gives rise to incredulity ... fact that apparent 'leader' of the group had to be rescued last year while attempting much the same excursion.

In and of itself, not inexcusable. Stuff happens. But for most folks -- prep'ers or not -- that would constitute a lasting 'life lesson.' Sadly, not in this case.

But I'm not about to entirely dismiss Art-in-FL's casino-scenario. No less believable than venturing into AZ desert sans H2O.