I am planning on getting a 60-day (+1 extension) tourist visa for Thailand. I will be flying in from Siem Reap, Cambodia. But I am currently in South Africa. I have both a UK and SA passport. I plan to spend the entire month in Siem Reap before heading to Thailand. The E-visa site tells me I need to apply through the nearest embassy. What is my best option here? Should I apply through the embassy in SA or the embassy in Cambodia? Will I require any physical documents to be sent back and forth from the embassy?