@Mark *********
You need to pay attention to the fact that the O/P is from South Africa and got a tourist visa from the consulate in Pretoria that has writing on it stating they need to go back there to change their visa.
people have been denied getting a visa in Penang, Vientiane & Savannakhet with that writing on their old one.
Saying they can go to lao is not necessarily what they can do.