Can I Get a 60-Day Extension for Visiting My Children on a Single Entry Visa?

There are two separate questions in this post that are combined into one:

Question 1: Can you get a 60 day extension of stay based on visiting Thai family, without having your wife present? Yes. You can get a 60 day extension of stay based on visiting Thai family based on your children. Your children will have to come with you to the immigration office. Each immigration office has their own requirements - go to your local immigration office and ask them.

Question 2: Can you get this extension of stay while on amnesty? It depends on the immigration office. Since you are on amnesty, I suggest continue staying on amnesty until it ends. Once the amnesty ends, either try to get that 60 day extension of stay, OR leave the country and return.