This year in chatuchuk I had my yellow book and pink card and still made me go immigration for resident certificate, in the past yellow book and was good to go .
Yellow House book proof of your address but last time I made a driving licence it wasn't proof ! So I had to go to immigration show them my yellow book pay them 500 thb for a paper to prove my address.. you getting the picture .
and he never declared a valid reason so can only assume he was going on holiday , had he had a valid reason this post wouldn't have gone up and we wouldn't be having this conversation 😉