not really just like security, iv been married 14 years now to a thai, live in the sticks 2 daughter's 3 house on my land swimming pool, and my wife still works in our shop ,people get the wrong information about thai lady's, unless they are bar girl scammers
If you have a copy of your child's birth certificate, get it translated and signed and stamped, and apply for a uk passport, then in Thailand apply for thai passport, my 2 daughter's are classed as duel nationality, no visa needed,for your child. Then start the long lenthy process of visa for your wife, good luck
I had the same situation earlier this year my non o visa didn't come before I flew , I entered on a 30day visa exempt, extended for 30 days in the mean time visa email came ,not forgetting it's valid 3 months from issue, I went to Vietnam, came back to Thailand and activate my visa, then extended for 60 days ,with the options of extending for 1 year based on marriage.