FYI, I did use AP for travel twice and I
went to Tijuana (Mexico) to apply for
a H1 in October 2003 before going back to
Shanghai to get married and have my wife apply for her
H4. I have H1 visa stamp before but it
has expired for more than 1 year thus ineligible
for H1 revalidation. I guess that we were lucky.
Good luck to you all.