hi everyone. just asking for confirmation here. my 30 day tourist visa exempt (got it entering thailand at bkk from cambodia, us passport) expires tomorrow. am in udon thani and close to immigration office. i want to get 30 day extension. do i just pick up paperwork and fill it out there to get said extension. (cannot do any more land crossings). 1900 baht, i assume. if not, please correct. i did search our forum here, just confirming. thanks in advance for all assistance offered. jb