I am on a one year Non-O extension Based on Retirement. I need to get my Non-Thai wife(we just got married in Thailand) and her child Non-O Dependent visas and then extend those in Bangkok piggybacking onto my retirement extension. What is the best local embassy to do this at - Penang or Vientiene and what documents are required? And do I have to wait to put them onto my extension during the last 30 days of their entry? Thanks for your help.