For those inquiring about temporary novice (samanera) ordination in Thailand, may I recommend the following: http://www.monkordination.com
Dr. Apisit is the Abbot of Wat Sri Boen Ruang in Fang, Chiang Mai region, Thailand, and he supervises the teaching and permitting of novice ordinations for western men who qualify. Dr. Apisit is a young, dynamic Abbot and he is assisted by Phra Fred and Phra Greg, both English speaking Bhikkhus who teach Dhamma and Vipassana well.
Many men, young and older, have migrated to WSBR for temporary ordination and found the experience, the Monks and lay people, and the beauty of the region, extraordinary.
I ordained as a samanera in the summer of 2010 after a period of time in study and practice before the Rains. I was fortunate to be permitted by Dr. Apisit to do so, as my Pali was less than complete during the ordination, but I was ordained. An experience that I cannot adequately describe. You would need to experience it yourself. Highly recommended.