If we have a 60 day visa are we able to go to Cambodia and simply come back to Thailand a week or two later on our same original 60 day Thailand visa? We hope to extend 30 days while there. Our flights are booked into Bangkok and departing from Bangkok back to Canada 72 days later so we would need to come back to Thailand to fly home. We need advice on how to visit the other countries for a week or two at the end of our trip (day 60-72).