Blasting big stereo's in cars are not legal.... that is actually fact.
Weird law but yeah I have been fined, I have dual cab pick up with a walled setup with 6 15@ subs running 10,000w RMS and yeah...,... I have only received fines never arrested.
Pattaya holds status as a special administrative zone and has a different election that is why booze was not banned but all others parts of Chonburi it was.
And yet people in this thread claim the country is 3rd world... that is not what you are describing.
https://aseannow.com/topic/1353780-will-thailand-always-remain-a-third-world-country/#comment-19639705