if you do need VoA then god bless. There was a news this week that Chinese tourist refused to pay so called "convenience fee" to speed up the VoA process, got attack and deport back to China. Sparking the pressure domestically and China on Immigration police corruption. now, I wonder if no Immi police will dare to do the fast track service for you.
Secondly, now it is Chinese holiday seasons and they come to Thailand at their peak. If you are unfortunate enough to landing the same time as they, god speed.