Dhammakaya seems to be just another money hungry cult, pity as the founder is still one of the most revered monks. The only time we went to Wat Pakhnam we were hustled for donations as soon as we got there. The book My Life as a Siamese monk by Richard Randall is worth a read, he was there in the early 50's when it was authentic. It's not regular Thai Buddhism.
https://www.theguardian.com/world/2017/mar/10/thailand-authorities-seek-disrobe-scandal-hit-buddhist-abbot