Advance parole on my limited knowledge does not guarantee your entry. Thus,if you can get it stammped as H1, it is indeed better. But I would imagine most of the time advance parole is more than enough. More about advance parole in this site. http://uscis.gov/graphics/publicaffairs/newsrels/CISTravelAdvisory.pdf http://64.233.161.104/search?q=cache:Psza2_RD_WEJ:uscis.gov/graphics/services/Emergency/+advance+parole&hl=en Enjoy your vacation. Indisguise:)