Hi! I’m in Chiang Mai. Can I go any day/time I want if I'm extending my 60 days tourist visa for one more month? I heard that it's difficult to change the current visa to another one (from Tourist to let's say Non-O volunteer or Ed visa etc.) Is that true? How many days should it be left on my passport if I'm extending one more month? If 5/7 days left is okay, I want to wait and see as I've applied for jobs here in Thailand as well... TIA!