According to their bug tracker, App Engine should support naked domains (without a www. prefix, for example, just "http://domain.com"). Caveat: no https set, they're hoping to get that out in a subsequent release.
Google provides tutorials on how to mimic a service being down, but I'm not doing something correctly as datastore put() operations still succeed and exceptions like CapabilityDisabledError do not get raised, which means my tests fail.
We had uboxes shipped here from California and the staff here have been nothing but pleasant and professional. We rented a truck from them to take stuff from the uboxes to our apartment and the rental process was quick and painless.