Thanks. 1. TM86 for Non-O. is it to assume that this is a single entry visa (basically, cannot leaving the country even for a day will end the Non-O visa). 2. Did you mean '..30 days or less on the stamp".. but at least 20 days before end of stamp as well (applicaiton window between 30 - 20 days before end of stamp). And option to request for multiple entry retirement (year extenstion) can be made at this time ?